Abdel-Rahman, MJ & Krunz, M 2015, 'Stochastic Guard-Band-Aware Channel Assignment With Bonding and Aggregation for DSA Networks', IEEE Transactions on Wireless Communications, vol. 14, no. 7, pp. 3888-3898.
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Abdel-Rahman, MJ, Krunz, M & Erwin, R 2015, 'Exploiting cognitive radios for reliable satellite communications', International Journal of Satellite Communications and Networking, vol. 33, no. 3, pp. 197-216.
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Abdel-Rahman, MJ, Rahbari, H & Krunz, M 2015, 'Multicast Rendezvous in Fast-Varying DSA Networks', IEEE Transactions on Mobile Computing, vol. 14, no. 7, pp. 1449-1462.
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Abdolali, A, Ngo, HH, Guo, W, Zhou, JL, Du, B, Wei, Q, Wang, XC & Nguyen, PD 2015, 'Characterization of a multi-metal binding biosorbent: Chemical modification and desorption studies', BIORESOURCE TECHNOLOGY, vol. 193, pp. 477-487.
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Abdullahi, S, Pradhan, B & Jebur, MN 2015, 'GIS-based sustainable city compactness assessment using integration of MCDM, Bayes theorem and RADAR technology', Geocarto International, vol. 30, no. 4, pp. 365-387.
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Abdullahi, S, Pradhan, B, Mansor, S & Shariff, ARM 2015, 'GIS-based modeling for the spatial measurement and evaluation of mixed land use development for a compact city', GIScience & Remote Sensing, vol. 52, no. 1, pp. 18-39.
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AbdullahWazirali, R & Chaczko, Z 2015, 'EA based Heuristic Segmentation for Efficient Data Hiding', International Journal of Computer Applications, vol. 118, no. 5, pp. 1-7.
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Information concealment is of paramount importance in information and communication security. For the protection of information and intellectual property, effective techniques are needed. Steganography is the art of writing concealed information in a way that it does not arouse suspicion about its existence. This ensures that only the sender and the recipient are aware of the concealed message existence. Capacity and Stego image imperceptibility are the most crucial aspects. This paper provides a heuristic approach of choosing the right-most regions for embedding that ensure minimum changes to stego object. Then, different percentages of secret data will be hidden on the cluster based on the characteristic of the region. Therefore, the sharp edge region will hide more data while the smooth will hide data. The proposed approach use K-mean clustering to categorized the segmentation and then genetic algorithm will be used to boost the PSNR (peak signal to-noise ratio) value while optimizing high capacity information. The obtained stego object is virtually indistinguishable from the cover object. The experimental results show a significant enhancement over other previous work.
Abolhasan, M, Lipman, J, Ni, W & Hagelstein, B 2015, 'Software-Defined Wireless Networking: Centralized, Distributed, or Hybrid?', IEEE NETWORK, vol. 29, no. 4, pp. 32-38.
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Scalability is a key issue in large scale WDNs, such as vehicular networks and device-to-device networks. To address the issue, this article extends the SDN concept, and presents a new network architecture that eliminates the need of multi-hop flooding for route discovery, thereby enabling WDNs to scale. The key idea of the new architecture is to split network control and data forwarding by using two separate frequency bands. Another important aspect of the architecture is that computational complexity of routing is split between the SDN controller and the forwarding nodes, thereby allowing nodes to make distributed routing decisions. As a result, network control of the new architecture has a hybrid structure, which improves the operability and scalability of large scale WDNs. Our case study shows that the new architecture is able to substantially improve scalability and reliability of WDNs, especially in mobile environments.
Abousnina, RM, Nghiem, LD & Bundschuh, J 2015, 'Comparison between oily and coal seam gas produced water with respect to quantity, characteristics and treatment technologies: a review', Desalination and Water Treatment, vol. 54, no. 7, pp. 1793-1808.
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Abu Alsheikh, M, Hoang, DT, Niyato, D, Tan, H-P & Lin, S 2015, 'Markov Decision Processes With Applications in Wireless Sensor Networks: A Survey', IEEE Communications Surveys & Tutorials, vol. 17, no. 3, pp. 1239-1267.
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Acín, A, Duan, R, Roberson, DE, Sainz, AB & Winter, A 2015, 'A new property of the Lovász number and duality relations between graph parameters', Discrete Applied Mathematics, vol. 216, no. 3, pp. 3-501.
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We show that for any graph $G$, by considering 'activation' through the
strong product with another graph $H$, the relation $\alpha(G) \leq
\vartheta(G)$ between the independence number and the Lov\'{a}sz number of $G$
can be made arbitrarily tight: Precisely, the inequality \[
\alpha(G \times H) \leq \vartheta(G \times H) = \vartheta(G)\,\vartheta(H) \]
becomes asymptotically an equality for a suitable sequence of ancillary graphs
$H$.
This motivates us to look for other products of graph parameters of $G$ and
$H$ on the right hand side of the above relation. For instance, a result of
Rosenfeld and Hales states that \[
\alpha(G \times H) \leq \alpha^*(G)\,\alpha(H), \] with the fractional
packing number $\alpha^*(G)$, and for every $G$ there exists $H$ that makes the
above an equality; conversely, for every graph $H$ there is a $G$ that attains
equality.
These findings constitute some sort of duality of graph parameters, mediated
through the independence number, under which $\alpha$ and $\alpha^*$ are dual
to each other, and the Lov\'{a}sz number $\vartheta$ is self-dual. We also show
duality of Schrijver's and Szegedy's variants $\vartheta^-$ and $\vartheta^+$
of the Lov\'{a}sz number, and explore analogous notions for the chromatic
number under strong and disjunctive graph products.
Acuna, P, Moran, L, Rivera, M, Aguilera, R, Burgos, R & Agelidis, VG 2015, 'A Single-Objective Predictive Control Method for a Multivariable Single-Phase Three-Level NPC Converter-Based Active Power Filter', IEEE Transactions on Industrial Electronics, vol. 62, no. 7, pp. 4598-4607.
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A single-objective predictive control method that deals with four main control objectives applied to a multivariable single-phase three-level neutral-point-clamped converter operating as an active power filter is proposed in this paper. The four control objectives are to self-support the dc-bus voltage under load variations, to compensate the reactive power and the current harmonics, and to balance the dc capacitor voltages by using a predefined combination of the redundant switching states of the converter. The main contribution of the proposed method is that these objectives are accomplished without using weighting factors in the cost function, which eliminates problems such as multiobjective optimization or additional empirical procedures for determination of these factors. As a result, the method is easy to implement and rapidly selects the optimal voltage to improve the dynamic-state performance. Experimental results from a 2-kVA prototype are presented to prove that the method is valid for single-phase compensation. The well-known effect of model parameter errors' issue, which is inherent in predictive control methods, is also tested to confirm that the harmonic distortion in the grid current is below 5% even when the predictive model has a 25% error between actual and theoretically estimated grid impedance values.
Aditiya, HB, Sing, KP, Hanif, M & Mahlia, TMI 2015, 'Effect of Acid Pretreatment on Enzymatic Hydrolysis in Bioethanol Production from Rice Straw', International Journal of Technology, vol. 6, no. 1, pp. 3-3.
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© IJTech 2015. Clean, safe and sustainable energy sources must be found to minimize all side-effects of fossil fuel consumption. Second generation bioethanol possesses a great potential as an alternative energy source especially in the transportation sector. In this study, rice straw was selected to be studied as a conversion of potential lignocellulosic biomass into bioethanol. Firstly, rice straw was processed with mechanical pretreatment using a home blender, followed by acid pretreatment using 2.0 M sulphuric acid (H2SO4) at 90°C for 60 minutes. The glucose yield was found to be 9.71 g/L. Then, rice straw pretreated with acid was hydrolyzed using 24 mg of cellulase from Tichoderma Ressei ATCC 26921 over a 72-hour duration, which yielded a total glucose count of 11.466 g/L. After fermentation with Saccharomyces cerevisiae, it was found that by combining enzymatic hydrolysis with acid pretreatment yielded a higher ethanol content after fermentation (0.1503% or 52.75% of theoretical value) compared to acidic pretreatment alone (0.013% or 11.26% of theoretical value).
Afifi, W & Krunz, M 2015, 'Incorporating self-interference suppression for full-duplex operation in opportunistic spectrum access systems', IEEE Transactions on Wireless Communications, vol. 14, no. 4, pp. 2180-2191.
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Afroz, F, Heidery, R, Shehab, M, Sandrasegaran, K & Shompa, SS 2015, 'Comparative Analysis of Downlink Packet Scheduling Algorithms in 3GPP LTE Networks', International Journal of Wireless & Mobile Networks, vol. 7, no. 5, pp. 1-21.
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Long Term Evolution (LTE) mobile network aims to support high speed network services even in highmobility
scenarios. To achieve this goal, LTE adopts some advanced features in Radio Resource
Management (RRM) procedures. Among them, LTE packet scheduling plays a fundamental role in
maximising system performance. In this paper, a comparative analysis on the performances of
Proportional Fair (PF), Exponential/Proportional Fair (EXP/PF), Exponential (EXP) Rule, MaximumLargest
Weighted Delay First (M-LWDF), Logarithmic (LOG) Rule and Frame Level Scheduler (FLS) LTE
downlink packet scheduling algorithms is reported. Performance is evaluated in single cell with
interference environment while increasing user number and user speed. Results show that for multimedia
flow, FLS scheme outperforms other five schemes in terms of packet delay, packet loss ratio, and average
throughput, whereas for best-effort flow, EXP-PF scheme shows better average throughput performance on
average as compared with other algorithms being considered herein.
Afroz, F, Huq, A, F, A & Sandrasegaran, K 2015, 'Performance Analysis of Adaptive Noise Canceller Employing NLMS Algorithm', International Journal of Wireless & Mobile Networks, vol. 7, no. 2, pp. 45-58.
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Afroz, F, Sandrasegaran, K & H, AK 2015, 'Interference Management in Lte Downlink Networks', International Journal of Wireless & Mobile Networks, vol. 7, no. 1, pp. 91-106.
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Afroz, F, Subramanian, R, Heidary, R, Sandrasegaran, K & Ahmed, S 2015, 'SINR, RSRP, RSSI and RSRQ Measurements in Long Term Evolution Networks', International Journal of Wireless & Mobile Networks, vol. 7, no. 4, pp. 113-123.
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Afshar, S, George, L, Thakur, CS, Tapson, J, van Schaik, A, de Chazal, P & Hamilton, TJ 2015, 'Turn Down That Noise: Synaptic Encoding of Afferent SNR in a Single Spiking Neuron', IEEE Transactions on Biomedical Circuits and Systems, vol. 9, no. 2, pp. 188-196.
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Afzal, MU & Esselle, KP 2015, 'Quasi-analytical synthesis of continuous phase correcting structures to increase the directivity of circularly polarized Fabry-Perot resonator antennas', Journal of Applied Physics, vol. 117, no. 21, pp. 214902-214902.
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This paper presents a quasi-analytical technique to design a continuous, all-dielectric phase correcting structures (PCSs) for circularly polarized Fabry-Perot resonator antennas (FPRAs). The PCS has been realized by varying the thickness of a rotationally symmetric dielectric block placed above the antenna. A global analytical expression is derived for the PCS thickness profile, which is required to achieve nearly uniform phase distribution at the output of the PCS, despite the non-uniform phase distribution at its input. An alternative piecewise technique based on spline interpolation is also explored to design a PCS. It is shown from both far- and near-field results that a PCS tremendously improves the radiation performance of the FPRA. These improvements include an increase in peak directivity from 22 to 120 (from 13.4 dBic to 20.8 dBic) and a decrease of 3 dB beamwidth from 41.5° to 15°. The phase-corrected antenna also has a good directivity bandwidth of 1.3 GHz, which is 11% of the center frequency.
Afzal, MU, Esselle, KP & Zeb, BA 2015, 'Dielectric Phase-Correcting Structures for Electromagnetic Band Gap Resonator Antennas', IEEE Transactions on Antennas and Propagation, vol. 63, no. 8, pp. 3390-3399.
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Aguilera, RP & Quevedo, DE 2015, 'Predictive Control of Power Converters: Designs With Guaranteed Performance', IEEE Transactions on Industrial Informatics, vol. 11, no. 1, pp. 53-63.
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Aguilera, RP, Lezana, P & Quevedo, DE 2015, 'Switched Model Predictive Control for Improved Transient and Steady-State Performance', IEEE Transactions on Industrial Informatics, vol. 11, no. 4, pp. 968-977.
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Ahmed, M, Khawaja, M, Notarianni, M, Wang, B, Goding, D, Gupta, B, Boeckl, JJ, Takshi, A, Motta, N, Saddow, SE & Iacopi, F 2015, 'A thin film approach for SiC-derived graphene as an on-chip electrode for supercapacitors', Nanotechnology, vol. 26, no. 43, pp. 434005-434005.
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Ahmed, M, Khawaja, M, Notarianni, M, Wang, B, Goding, D, Gupta, B, Boeckl, JJ, Takshi, A, Motta, N, Saddow, SE & Iacopi, F 2015, 'Porous SiC/Graphene-on-Wafer Electrodes for Supercapacitors', ECS Meeting Abstracts, vol. MA2015-01, no. 1, pp. 186-186.
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The intensive research on epitaxial 3C SiC/Si wafers has opened up a new era for the micro-fabrication industry and led to the direct growth of high quality and large area graphene layers on the device location for on-chip applications.[1] This new technology to grow graphene on silicon possesses various advantages over the conventional methodology, such as eliminating the complex and unreliable process of transferring graphene flakes and replacing expensive SiC wafers, and also prompts the use of graphene for energy storage, e.g. as supercapacitors, at wafer level. However, morphology control of the graphene layers on silicon remains a challenge to further enhance the performance of supercapacitors, which mainly relies on the surface area of the active graphene layers through an electrochemical double layer mechanism. To address this issue, we demonstrate, for the first time, creating porosity on the graphene surface. The growth of porous graphene on wafers in our work presents a facile, highly reproducible and low-cost approach to obtain highly continuous graphene layers with extremely low sheet resistance. Our preliminary electrochemical investigation indicates that the porous SiC/graphene-on-wafer electrode can deliver typical supercapacitive behaviours and the porosity we create on the graphene surface can facilitate the electrochemical performance by providing more accessible surface area. Graphene prepared via this routine can also be employed to fabricate micro-supercapacitors in an interdiginated pattern for future on-chip integration and energy storage.
[1] B.V. Cunning, M. Ahmed, N. Mishra, A.R. Kermany, B. Wood, F. Iacopi, Nanotechnology, 25 (2014) 325301.
Ahmed, MB, Zhou, JL, Ngo, HH & Guo, W 2015, 'Adsorptive removal of antibiotics from water and wastewater: Progress and challenges', SCIENCE OF THE TOTAL ENVIRONMENT, vol. 532, pp. 112-126.
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Ahmed, S, Afroz, F, Tawsif, A & Huq, A 2015, 'Cancellation of White and Color Noise with Adaptive Filter Using LMS Algorithm', IJWMN, vol. vol. 7, no. 4, pp. 19-36.
Akbarnezhad, A, Huan, M, Mesgari, S & Castel, A 2015, 'Recycling of geopolymer concrete', Construction and Building Materials, vol. 101, pp. 152-158.
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Akhiani, AR, Mehrali, M, Tahan Latibari, S, Mehrali, M, Mahlia, TMI, Sadeghinezhad, E & Metselaar, HSC 2015, 'One-Step Preparation of Form-Stable Phase Change Material through Self-Assembly of Fatty Acid and Graphene', The Journal of Physical Chemistry C, vol. 119, no. 40, pp. 22787-22796.
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Akther, N, Sodiq, A, Giwa, A, Daer, S, Arafat, HA & Hasan, SW 2015, 'Recent advancements in forward osmosis desalination: A review', Chemical Engineering Journal, vol. 281, pp. 502-522.
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Al Aattas, M & Kang, K 2015, 'Saudi Enterprise and Critical Success Factors', The Journal of Organizational Management Studies, vol. 2015, pp. 1-8.
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The importance of the business systems is ever increasingly, as the new and innovative systems
are being used by organizations to improve their competitiveness. Based on the literature
review, this research identifies four factors that can impact the success of new business systems
in Saudi enterprise. However, the role of culture also cannot be neglected in the Saudi firms
which aim to improve their businesses systems. This research is proposing a conceptual model
that describes the culture impact on the success of new business systems in Saudi enterprises
related to collaboration and IT experience, and the characteristics related to IT systems:
usefulness and efficiency.
Al Mahmud, KAH, Kalam, MA, Masjuki, HH & Abdollah, MFB 2015, 'Tribological Study of a Tetrahedral Diamond-Like Carbon Coating under Vegetable Oil–Based Lubricated Condition', Tribology Transactions, vol. 58, no. 5, pp. 907-913.
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Al Mahmud, KAH, Kalam, MA, Masjuki, HH, Mobarak, HM & Zulkifli, NWM 2015, 'An updated overview of diamond-like carbon coating in tribology', Critical Reviews in Solid State and Materials Sciences, vol. 40, no. 2, pp. 90-118.
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Albahri, A, Lech, M & Cheng, E 2015, 'Effect of Speech Compression on the Automatic Recognition of Emotions', International Journal of Signal Processing Systems, vol. 4, no. 1.
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Al-Haj Mohd, MMM, Phung, H, Sun, J & Morisky, DE 2015, 'The predictors to medication adherence among adults with diabetes in the United Arab Emirates', Journal of Diabetes & Metabolic Disorders, vol. 15, no. 1.
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Al-Hassan, M, Lu, H & Lu, J 2015, 'A semantic enhanced hybrid recommendation approach: A case study of e-Government tourism service recommendation system', DECISION SUPPORT SYSTEMS, vol. 72, pp. 97-109.
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Allida, SM, Inglis, SC, Davidson, PM, Lal, S, Hayward, CS & Newton, PJ 2015, 'Thirst in chronic heart failure: a review', Journal of Clinical Nursing, vol. 24, no. 7-8, pp. 916-926.
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This review will (1) explore factors related to thirst in chronic heart failure and (2) describe interventions to alleviate thirst in chronic heart failure patients.Thirst is a common and troublesome symptom of chronic heart failure. Despite the burden and prevalence of this symptom, there are limited strategies to assist in its management.This is a review of literature on the burden of thirst, contributors to thirst and potential management strategies of thirst in patients with chronic heart failure.Medline, Cumulative Index for Nursing and Allied Health, PubMed and Scopus were searched using the key words thirst, chronic heart failure, angiotensin II, fluid restriction and intervention. Of the 165 citations yielded, nine studies (n = 9) were included. The eligibility criteria included participants with confirmed diagnosis of chronic heart failure, randomised controlled studies or any studies with thirst as primary or secondary outcome, in humans and in English. There was no limit to the years searched.Factors related to thirst in chronic heart failure were condition; prolonged neurohormonal activation, treatment; pharmacological interventions and fluid restriction and emotion. No intervention studies were found in chronic heart failure patients. Interventions such as artificial saliva and chewing gum have been investigated for their effectiveness as a thirst reliever in haemodialysis patients.Thirst is a frequent and troublesome symptom for individuals with chronic heart failure. It is highly likely that this contributes to poor adherence with fluid restrictions. Chewing gum can help alleviate thirst, but investigation in people with heart failure is needed.Increasing awareness of thirst and interventions to relieve it in clinical practice is likely to improve the quality of care for people with chronic heart failure.
Almabrok, MH, McLaughlan, RG & Vessalas, K 2015, 'Effect of Curing and Mixing Methods on the Compressive Strength of Mortar Containing Oil', Journal of Civil Engineering, Science and Technology, vol. 6, no. 1, pp. 6-11.
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Oil contaminated fine aggregate is a major environmental concern and can arise as a by product of industrial activities (e.g. oil well drilling and land contamination). Cement–based stabilisation/solidification of oil contaminated materials is an emerging technology however there are some issues that have not been fully addressed. This paper reports the results of a study conducted to investigate the effect of different curing and mixing methods on cement solidification and its consequent effect on the compressive strength of the resultant cementitious product. This work has been done to address leaching concerns during the curing period. The normal curing method for samples to be tested for compressive strength is lime saturated water. However, this method invalidates any subsequent leaching tests. Accordingly, bag curing (BC) and lime saturated water curing (LSW) have been applied using mortar mixed with mineral oil up to 10% by sand mass under water wet (WW) or oil wet (OW) mixing methods. The results indicate that development in 28 day compressive strength can be achieved without applying water by external means if the moisture movement from the mortar samples is prohibited, irrespective of the mixing methods used.
Al-Mahmoud, F, Castel, A, Minh, TQ & François, R 2015, 'Reinforced Concrete Beams Strengthened with NSM CFRP Rods in Shear', Advances in Structural Engineering, vol. 18, no. 10, pp. 1563-1574.
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This experimental research aims to investigate the possibility of using Carbon Fiber-Reinforced Polymer (CFRP) rods to strengthen in shear concrete structural members with the Near Surface Mounted reinforcement (NSM) technique. Seven reinforced concrete beams were tested in flexure with or without traditional shear reinforcement. Carbon-epoxy pultruded FRP (CFRP) rods with 6 mm in diameter were used. The possibility of using a mortar as filling material with surface pre-conditioned CFRP rod is investigated and compared to resin performance. Results show that NSM technique is very efficient to strengthen reinforced concrete beam in shear. Using the resin instead of mortar as the filling material still increases the efficiency of the shear strengthening but the gain is only moderate. The experimental results are compared with existing analytical models.
Al-sharif, AAA & Pradhan, B 2015, 'A novel approach for predicting the spatial patterns of urban expansion by combining the chi-squared automatic integration detection decision tree, Markov chain and cellular automata models in GIS', Geocarto International, vol. 30, no. 8, pp. 858-881.
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Alsharif, AAA, Pradhan, B, Mansor, S & Shafri, HZM 2015, 'Urban expansion assessment by using remotely sensed data and the relative Shannon entropy model in GIS: A case study of Tripoli, Libya', Theoretical and Empirical Researches in Urban Management, vol. 10, no. 1, pp. 55-71.
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Urban growth is a spatial dynamic phenomenon that indicates population growth, economic expansion, city importance level, and so on. The use of current and historical data in urbanization analysis is necessary in urban spatial studies and future urban planning. This research aims to study, examine, and assess the urban expansion of Tripoli spatially and temporally by using remotely sensed data, geographic information systems (GIS), and the statistical relative Shannon entropy model. Remotely sensed data (four satellite images from 1984, 1996, 2002, and 2010) and GIS were used to determine the extent of urban area and urban growth in Tripoli in five different directions. Shannon’s entropy model was implemented to analyze and assess urban expansion trends as a process and pattern in the study area. Results show that the Tripoli metropolitan area has a high level of sprawl along its urban expansion history. The hypothesis employed for Shannon’s entropy zone division produces good insights on overall urban growth, urban growth direction, and specific urban growth over time. The obtained results provide good guidance for modeling urban sprawl processes, understanding urbanization causative factors, and predicting future urban patterns. Furthermore, the findings of current paper can be used by decision makers and urban planners to identify past and present urban expansions tendencies to prepare for future urban demands.
Altaee, A & Hilal, N 2015, 'Design optimization of high performance dual stage pressure retarded osmosis', Desalination, vol. 355, pp. 217-224.
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Altaee, A & Hilal, N 2015, 'High recovery rate NF–FO–RO hybrid system for inland brackish water treatment', Desalination, vol. 363, pp. 19-25.
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Altaee, A & Sharif, A 2015, 'A conceptual NF/RO arrangement design in the pressure vessel for seawater desalination', Desalination and Water Treatment, vol. 54, no. 3, pp. 624-636.
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Altaee, A & Sharif, A 2015, 'Pressure retarded osmosis: advancement in the process applications for power generation and desalination', Desalination, vol. 356, pp. 31-46.
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Altaee, A, Sharif, A, Zaragoza, G & Ismail, AF 2015, 'Evaluation of FO-RO and PRO-RO designs for power generation and seawater desalination using impaired water feeds', Desalination, vol. 368, pp. 27-35.
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Crown Copyright © 2014 Published by Elsevier B.V. All rights reserved. PRO and FO coupling with an RO membrane process is proposed to reduce the cost of seawater desalination and the potential for power generation. Three conceptual design configurations, PRO-RO, FO-RO and RO-PRO were evaluated here using standard seawater concentration and impaired water as the draw and the feed solutions respectively. The PRO-RO and RO-PRO designs were evaluated for power generation and seawater desalination while the FO-RO design was proposed for seawater desalination only. The impact of the draw and feed solutions' flow rate and the impaired water TDS on the performance of each design was estimated using pre-developed software. The simulation results showed that the performance of all designs was more sensitive to the increase in the flow rate of draw solution than to the flow rate of feed solution. Furthermore, all designs showed a decrease in membrane flux and recovery rate with increasing the TDS of feed water from 0.2 g/L to 10 g/L as a result of decreasing the net driving force across the membrane and the concentration polarization phenomenon. The FO-RO design produced the lowest RO permeate concentration followed by the PRO-RO and RO-PRO designs respectively. In terms of power generation, the RO-PRO design was more efficient than the PRO-RO design. The FO-RO design exhibited the lowest desalination power consumption followed by the PRO-RO and RO-PRO designs respectively. At 10 g/L feed concentration, the net power consumption in the FO-RO was 9.4% less than that in the PRO-RO which was in turn 5.3% less than that in the RO-PRO design. The estimated cost of the FO/PRO module in the PRO-RO design was 2.2 and 4.3 times higher than that in the FO-RO and RO-PRO designs respectively.
Althuwaynee, OF, Pradhan, B & Ahmad, N 2015, 'Estimation of rainfall threshold and its use in landslide hazard mapping of Kuala Lumpur metropolitan and surrounding areas', Landslides, vol. 12, no. 5, pp. 861-875.
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AMARJARGAL, A, TIJING, LD & KIM, CS 2015, 'Simple fabrication of Ag nanoparticle-impregnated electrospun nanofibres as SERS substrates', Bulletin of Materials Science, vol. 38, no. 1, pp. 267-270.
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Ambainis, A, Balodis, K, Belovs, A, Lee, T, Santha, M & Smotrovs, J 2015, 'Separations in Query Complexity Based on Pointer Functions', Journal of the ACM, vol. 64, no. 5.
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In 1986, Saks and Wigderson conjectured that the largest separation between
deterministic and zero-error randomized query complexity for a total boolean
function is given by the function $f$ on $n=2^k$ bits defined by a complete
binary tree of NAND gates of depth $k$, which achieves $R_0(f) =
O(D(f)^{0.7537\ldots})$. We show this is false by giving an example of a total
boolean function $f$ on $n$ bits whose deterministic query complexity is
$\Omega(n/\log(n))$ while its zero-error randomized query complexity is $\tilde
O(\sqrt{n})$. We further show that the quantum query complexity of the same
function is $\tilde O(n^{1/4})$, giving the first example of a total function
with a super-quadratic gap between its quantum and deterministic query
complexities.
We also construct a total boolean function $g$ on $n$ variables that has
zero-error randomized query complexity $\Omega(n/\log(n))$ and bounded-error
randomized query complexity $R(g) = \tilde O(\sqrt{n})$. This is the first
super-linear separation between these two complexity measures. The exact
quantum query complexity of the same function is $Q_E(g) = \tilde O(\sqrt{n})$.
These two functions show that the relations $D(f) = O(R_1(f)^2)$ and $R_0(f)
= \tilde O(R(f)^2)$ are optimal, up to poly-logarithmic factors. Further
variations of these functions give additional separations between other query
complexity measures: a cubic separation between $Q$ and $R_0$, a $3/2$-power
separation between $Q_E$ and $R$, and a 4th power separation between
approximate degree and bounded-error randomized query complexity.
All of these examples are variants of a function recently introduced by
\goos, Pitassi, and Watson which they used to separate the unambiguous
1-certificate complexity from deterministic query complexity and to resolve the
famous Clique versus Independent Set problem in communication complexity.
An, L & Lu, DD-C 2015, 'Design of a Single-Switch DC/DC Converter for a PV-Battery-Powered Pump System With PFM+PWM Control', IEEE Transactions on Industrial Electronics, vol. 62, no. 2, pp. 910-921.
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An, X, Gao, Y, Fang, J, Sun, G & Li, Q 2015, 'Crashworthiness design for foam-filled thin-walled structures with functionally lateral graded thickness sheets', Thin-Walled Structures, vol. 91, pp. 63-71.
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Anaissi, A, Goyal, M, Catchpoole, DR, Braytee, A & Kennedy, PJ 2015, 'Case-Based Retrieval Framework for Gene Expression Data', Cancer Informatics, vol. 14, pp. CIN.S22371-CIN.S22371.
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Background The process of retrieving similar cases in a case-based reasoning system is considered a big challenge for gene expression data sets. The huge number of gene expression values generated by microarray technology leads to complex data sets and similarity measures for high-dimensional data are problematic. Hence, gene expression similarity measurements require numerous machine-learning and data-mining techniques, such as feature selection and dimensionality reduction, to be incorporated into the retrieval process. Methods This article proposes a case-based retrieval framework that uses a k-nearest-neighbor classifier with a weighted-feature-based similarity to retrieve previously treated patients based on their gene expression profiles. Results The herein-proposed methodology is validated on several data sets: a childhood leukemia data set collected from The Children's Hospital at Westmead, as well as the Colon cancer, the National Cancer Institute (NCI), and the Prostate cancer data sets. Results obtained by the proposed framework in retrieving patients of the data sets who are similar to new patients are as follows: 96% accuracy on the childhood leukemia data set, 95% on the NCI data set, 93% on the Colon cancer data set, and 98% on the Prostate cancer data set. Conclusion The designed case-based retrieval framework is an appropriate choice for retrieving previous patients who are similar to a new patient, on the basis of their gene expression data, for better diagnosis and treatment of childhood leukemia. Moreover, this framework can be applied to other gene expression data sets using some or all of its steps.
Andersson, AK, Ma, J, Wang, J, Chen, X, Gedman, AL, Dang, J, Nakitandwe, J, Holmfeldt, L, Parker, M, Easton, J, Huether, R, Kriwacki, R, Rusch, M, Wu, G, Li, Y, Mulder, H, Raimondi, S, Pounds, S, Kang, G, Shi, L, Becksfort, J, Gupta, P, Payne-Turner, D, Vadodaria, B, Boggs, K, Yergeau, D, Manne, J, Song, G, Edmonson, M, Nagahawatte, P, Wei, L, Cheng, C, Pei, D, Sutton, R, Venn, NC, Chetcuti, A, Rush, A, Catchpoole, D, Heldrup, J, Fioretos, T, Lu, C, Ding, L, Pui, C-H, Shurtleff, S, Mullighan, CG, Mardis, ER, Wilson, RK, Gruber, TA, Zhang, J, Downing, JR & Hosp-Washin, SJCR 2015, 'The landscape of somatic mutations in infant MLL-rearranged acute lymphoblastic leukemias', NATURE GENETICS, vol. 47, no. 4, pp. 330-U192.
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Andrews, T, Dyson, LE & Wishart, J 2015, 'Advancing ethics frameworks and scenario-based learning to support educational research into mobile learning', International Journal of Research & Method in Education, vol. 38, no. 3, pp. 320-334.
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Angelini, L, Lalanne, D, Hoven, E, Khaled, O & Mugellini, E 2015, 'Move, Hold and Touch: A Framework for Tangible Gesture Interactive Systems', Machines, vol. 3, no. 3, pp. 173-207.
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Technology is spreading in our everyday world, and digital interaction beyond the screen, with real objects, allows taking advantage of our natural manipulative and communicative skills. Tangible gesture interaction takes advantage of these skills by bridging two popular domains in Human-Computer Interaction, tangible interaction and gestural interaction. In this paper, we present the Tangible Gesture Interaction Framework (TGIF) for classifying and guiding works in this field. We propose a classification of gestures according to three relationships with objects: move, hold and touch. Following this classification, we analyzed previous work in the literature to obtain guidelines and common practices for designing and building new tangible gesture interactive systems. We describe four interactive systems as application examples of the TGIF guidelines and we discuss the descriptive, evaluative and generative power of TGIF.
Ansari, AJ, Hai, FI, Guo, W, Ngo, HH, Price, WE & Nghiem, LD 2015, 'Selection of forward osmosis draw solutes for subsequent integration with anaerobic treatment to facilitate resource recovery from wastewater', Bioresource Technology, vol. 191, pp. 30-36.
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Arbab, MI, Varman, M, Masjuki, HH, Kalam, MA, Imtenan, S, Sajjad, H & Rizwanul Fattah, IM 2015, 'Evaluation of combustion, performance, and emissions of optimum palm–coconut blend in turbocharged and non-turbocharged conditions of a diesel engine', Energy Conversion and Management, vol. 90, pp. 111-120.
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Argha, A, Li, L, Su, SW & Nguyen, H 2015, 'Controllability Analysis of Two-Dimensional Systems Using 1D Approaches', IEEE Transactions on Automatic Control, vol. 60, no. 11, pp. 2977-2982.
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Working with the 1D form of 2D systems is an alternative
strategy to reduce the inherent complexity of 2D systems and their
applications. To achieve the 1D form of 2D systems, different from
the so-called WAM model, a new row (column) process was proposed
recently. The controllability analysis of this new 1D form is explored in
this paper. Two new notions of controllability namedWAM-controllability
and directional controllability for the underlying 2D systems are defined.
Corresponding conditions on the WAM-controllability and directional
controllability are derived, which are particularly useful for the control
problems of 2D systems via 1D framework. According to the presented
directional controllability, a directional minimum energy control input
is derived for 2D systems. A numerical example demonstrates the
applicability of the analysis presented in this note.
Arslan, A, Masjuki, HH, Varman, M, Kalam, MA, Quazi, MM, Al Mahmud, KAH, Gulzar, M & Habibullah, M 2015, 'Effects of texture diameter and depth on the tribological performance of DLC coating under lubricated sliding condition', Applied Surface Science, vol. 356, pp. 1135-1149.
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Aryal, R, Furumai, H, Nakajima, F, Beecham, S & Kandasamy, J 2015, 'Characterisation of Prolonged Deposits of Organic Matter in Infiltration System Inlets and Their Binding with Heavy Metals: a PARAFAC Approach', Water, Air, & Soil Pollution, vol. 226, no. 6.
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Aryal, R, Lee, B-K, Beecham, S, Kandasamy, J, Aryal, N & Parajuli, K 2015, 'Characterisation of Road Dust Organic Matter as a Function of Particle Size: A PARAFAC Approach', Water, Air, & Soil Pollution, vol. 226, no. 2.
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Asadnia, M, Kottapalli, AGP, Miao, J, Warkiani, ME & Triantafyllou, MS 2015, 'Artificial fish skin of self-powered micro-electromechanical systems hair cells for sensing hydrodynamic flow phenomena', Journal of The Royal Society Interface, vol. 12, no. 111, pp. 20150322-20150322.
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Using biological sensors, aquatic animals like fishes are capable of performing impressive behaviours such as super-manoeuvrability, hydrodynamic flow ‘vision’ and object localization with a success unmatched by human-engineered technologies. Inspired by the multiple functionalities of the ubiquitous lateral-line sensors of fishes, we developed flexible and surface-mountable arrays of micro-electromechanical systems (MEMS) artificial hair cell flow sensors. This paper reports the development of the MEMS artificial versions of superficial and canal neuromasts and experimental characterization of their unique flow-sensing roles. Our MEMS flow sensors feature a stereolithographically fabricated polymer hair cell mounted on Pb(Zr0.52Ti0.48)O3micro-diaphragm with floating bottom electrode. Canal-inspired versions are developed by mounting a polymer canal with pores that guide external flows to the hair cells embedded in the canal. Experimental results conducted employing our MEMS artificial superficial neuromasts (SNs) demonstrated a high sensitivity and very low threshold detection limit of 22 mV/(mm s−1) and 8.2 µm s−1, respectively, for an oscillating dipole stimulus vibrating at 35 Hz. Flexible arrays of such superficial sensors were demonstrated to localize an underwater dipole stimulus. Comparative experimental studies revealed a high-pass filtering nature of the canal encapsulated sensors with a cut-off frequency of 10 Hz and a flat frequency response of artificial SNs. Flexible arrays of self-powered, miniaturized, light-weight, low-cost and robust artificial lateral-line systems could enhance the capabilities of underwater vehicles.
Ashby, K, Eager, D, D'Elia, A & Day, L 2015, 'Influence of voluntary standards and design modifications on trampoline injury in Victoria, Australia', Injury Prevention, vol. 21, no. 5, pp. 314-319.
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Purpose To examine the influence of the voluntary Australian trampoline standard (AS 4989-2006) and market-driven design modifications on relevant trampoline injuries.
Methods Trend and intervention analysis on frequencies and proportions of hospital-treated trampoline-related injury in Victoria, Australia, extracted from the Victorian Emergency Minimum Dataset from 1 July 1999 to 30 June 2013. The injuries relevant to the AS were contact with spring and frame, and multiple-user injury. Falls from trampolines were relevant for netted trampolines, a market-driven modification.
Results Frequency of all trampoline injuries increased by 11.4% (95% CI 10.0% to 11.7%) on average each year. Spring and frame, and fall injuries increased to a lesser extent (8.7%, 95% CI 6.9% to 9.8% and 7.3%, 95% CI 5.8% to 8.3%, respectively). Multiple-user injuries increased by 21.0% (95% CI 16.3% to 21.9%). As a proportion of all trampoline injuries, spring and frame injury and falls injury decreased, while multiple-user injuries increased. The intervention analysis showed no significant change in spring and frame injuries associated with the AS (p=0.17). A significant increase was found for multiple-user injuries (p=0.01), in particular for the 0-year to 4-year age group (p<0.0001), post 2007.
Conclusions There was little evidence for an effect of the voluntary standard on spring and frame injury and none for multiple-user injury. Netted trampolines appear to be associated with a decrease in falls from trampolines but an increase in injuries to multiple users. A mandated trampoline safety standard and a safety campaign including warnings about multiple users is recommended. Continued monitoring of injury data will be required.
Ashby, K, Pointer, S, Eager, D & Day, L 2015, 'Australian trampoline injury patterns and trends', Australian and New Zealand Journal of Public Health, vol. 39, no. 5, pp. 491-494.
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Ashraf, J, Chang, E, Hussain, OK & Hussain, FK 2015, 'Ontology usage analysis in the ontology lifecycle: A state-of-the-art review', KNOWLEDGE-BASED SYSTEMS, vol. 80, pp. 34-47.
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Ashraf, J, Hussain, OK & Hussain, FK 2015, 'Making sense from Big RDF Data: OUSAF for measuring ontology usage', Software: Practice and Experience, vol. 45, no. 8, pp. 1051-1071.
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SummaryRecent growth and advancements in the Semantic Web have shifted the research focus from being knowledge‐centered to data‐centered. This has led to the increased use of ontologies to structurally represent the data, thereby generating huge amounts of RDF data, which we term Big RDF Data. Nevertheless, the literature lacks the tools to analyze Big RDF Data and make sense of it. Access to such tools would enable pragmatic inputs and insights for users in respect of such tasks as the usage and adoption of Ontologies, their uptake by different users in the community, and the identification of prevalent patterns. This analysis, which we term Ontology Usage, is important from the viewpoint of users who need informed inputs in the various stages of the ontology engineering lifecycle, such as ontology evolution, ontology population, and ontology deployment. In this paper, we propose the Ontology USage Analysis F̌ramework (OUSAF), which performs analysis of Ontology Usage on Big RDF Data and synthesizes the usage knowledge acquired. OUSAF provides a methodological approach to performing the various phases such as identifying, analyzing, representing, and utilizing the Ontology usage results from Big RDF Data. We describe in detail each of those phases and the metrics required to perform the analysis of each phase. The utilization of the OUSAF results obtained by users such as data publishers and ontology developers is demonstrated by a dataset collected in the e‐business domain. Copyright © 2014 John Wiley & Sons, Ltd.
Ashraful, AM, Masjuki, HH & Kalam, MA 2015, 'Particulate matter, carbon emissions and elemental compositions from a diesel engine exhaust fuelled with diesel–biodiesel blends', Atmospheric Environment, vol. 120, pp. 463-474.
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Aslani, F, Nejadi, S & Samali, B 2015, 'Instantaneous and time-dependent flexural cracking models of reinforced self-compacting concrete slabs with and without fibres', COMPUTERS AND CONCRETE, vol. 16, no. 2, pp. 223-243.
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© 2015 Techno-Press, Ltd. Self-compacting concrete (SCC) can be placed and compacted under its own weight with little or no compaction. It is cohesive enough to be handled without segregation or bleeding. Modifications in the mix design of SCC may significantly influence the material's mechanical properties. Therefore, it is vital to investigate whether all the assumed hypotheses about conventional concrete (CC) are also valid for SCC structures. The aim in this paper is to develop analytical models for flexural cracking that describe in appropriate detail the observed cracking behaviour of the reinforced concrete flexural one way slabs tested. The crack width and crack spacing calculation procedures outlined in five international codes, namely Eurocode 2 (1991), CEB-FIP (1990), ACI318-99 (1999), Eurocode 2 (2004), and fib-Model Code (2010), are presented and crack widths and crack spacing are accordingly calculated. Then, the results are compared with the proposed analytical models and the measured experimental values, and discussed in detail.
Athukorala, R, Indraratna, B & Vinod, JS 2015, 'Disturbed State Concept-Based Constitutive Model for Lignosulfonate-Treated Silty Sand', International Journal of Geomechanics, vol. 15, no. 6, pp. 04015002-04015002.
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Atif, A, Richards, D, Busch, P & Bilgin, A 2015, 'Assuring graduate competency: a technology acceptance model for course guide tools', Journal of Computing in Higher Education, vol. 27, no. 2, pp. 94-113.
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Azad, AK, Rasul, MG, Mofijur, M, Bhuiya, MMK, Mondal, SK & Sattar, MK 2015, 'ENERGY AND WASTE MANAGEMENT FOR PETROLEUM REFINING EFFLUENTS: A CASE STUDY IN BANGLADESH', International Journal of Automotive and Mechanical Engineering, vol. 11, no. 1, pp. 2170-2187.
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© Universiti Malaysia Pahang. Transport fuel is one of the major concerns of the energy market. This fuel mainly comes from the processing of crude petroleum oil. The transport fuel processing industries, such as crude oil distillation plants, gas condensate fractionation plants, natural gas processing plants, etc., are one of the most energy- and emission-intensive sectors in the world. On the other hand, the handling and transportation of petroleum products like gasoline, kerosene, diesel, naphtha, octane and sprite, etc. also produce environmental pollution. This study reviewed energy and waste management by transport fuel processing industries in Bangladesh. Such industries are also known as petrochemical industries. They mainly produce gaseous pollutants such as process gas, waste gas, etc. and liquid pollutants such as produced water, waste oil and grease, etc. The gaseous pollutants are burnt in the flare system to save the environment. The liquid pollutants are more hazardous because of their higher salinity and corrosivity and higher amounts of grease. The literature on waste water management techniques, pollution abatement techniques and oil-water separator techniques is described. The waste water treatment techniques used in the case study industries are briefly discussed. Energy flows for both gaseous and liquid waste management are developed. Energy-saving and time frame measures which can be implemented are also outlined. The study found that the rational use of energy and proper environmental management are essential for achieving the energy and environmental sustainability of transport fuel process industries.
Azadeh, A, Zia, NP, Saberi, M, Hussain, FK, Yoon, JH, Hussain, OK & Sadri, S 2015, 'A trust-based performance measurement modeling using t-norm and t-conorm operators', APPLIED SOFT COMPUTING, vol. 30, pp. 491-500.
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Azari, B, Fatahi, B & Khabbaz, H 2015, 'Numerical analysis of vertical drains accelerated consolidation considering combined soil disturbance and visco-plastic behaviour', GEOMECHANICS AND ENGINEERING, vol. 8, no. 2, pp. 187-220.
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Azim, MI, Hossain, MJ & Pota, HR 2015, 'Design of a Controller for Active Power Sharing in a Highly-Resistive Microgrid', IFAC-PapersOnLine, vol. 48, no. 30, pp. 288-293.
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Azzi, M, Duc, H & Ha, QP 2015, 'Toward sustainable energy usage in the power generation and construction sectors—a case study of Australia', Automation in Construction, vol. 59, pp. 122-127.
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Bai, Y, Han, C, Chen, X, Yu, H, Zong, X, Li, Z & Wang, L 2015, 'Boosting the efficiency of quantum dot sensitized solar cells up to 7.11% through simultaneous engineering of photocathode and photoanode', Nano Energy, vol. 13, pp. 609-619.
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Bailey, L, Sun, J, Courtney, M & Murphy, P 2015, 'Improving postoperative tonsillectomy pain management in children – A double blinded randomised control trial of a patient analgesia information sheet', International Journal of Pediatric Otorhinolaryngology, vol. 79, no. 5, pp. 732-739.
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Bailo, F 2015, 'Mapping online political talks through network analysis: a case study of the website of Italy's Five Star Movement', Policy Studies, vol. 36, no. 6, pp. 550-572.
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Bakker, S, Hausen, D, van den Hoven, E & Selker, T 2015, 'Preface: Designing for peripheral interaction: Seamlessly integrating interactive technology in everyday life', Interaction Design and Architecture(s), vol. 26, no. 1, pp. 3-5.
Bakker, S, van den Hoven, E & Eggen, B 2015, 'Evaluating Peripheral Interaction Design', HUMAN-COMPUTER INTERACTION, vol. 30, no. 6, pp. 473-506.
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Many actions in the physical world take place in the background or periphery of peoples attention. However interactions with computing technologies usually require focused attention. This paper explores the concept of peripheral interaction: physical interaction with technology that takes place outside the focus of attention. A peripheral interaction design (called FireFlies), which supports primary school teachers in their everyday routine through open-ended light-objects on the childrens desks, was deployed in four classrooms for six weeks. Results of interviews and video analysis indicate that the six participating teachers were able to physically interact with the FireFlies interactive artefact quickly and frequently without disturbing ongoing tasks. In the final weeks of the study, the teachers seemed able to easily shift their focus of attention between their main task and the interactive system. We therefore conclude that, even though it is difficult to measure peoples attention, a longitudinal approach seemed effective to find indicators for peripheral interaction.
Bakker, S, van den Hoven, E & Eggen, B 2015, 'Peripheral interaction: characteristics and considerations', PERSONAL AND UBIQUITOUS COMPUTING, vol. 19, no. 1, pp. 239-254.
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In everyday life, we are able to perceive information and perform physical actions in the background or periphery of attention. Inspired by this observation, several researchers have studied interactive systems that display digital information in the periphery of attention. To broaden the scope of this research direction, a few recent studies have focused on interactive systems that cannot only be perceived in the background, but also enable users to physically interact with digital information in their periphery. Such peripheral interaction designs can support computing technology to fluently embed in, and become a meaningful part of peoples everyday routines. With the increasing ubiquity of technology in our everyday environment, we believe that this direction is highly relevant nowadays. This paper presents an in-depth analysis of three case studies on peripheral interaction. These case studies involved the design and development of peripheral interactive systems and deployment of these systems in the real context of use for a number of weeks. Based on the insights gained through these case studies, we discuss generalized characteristics and considerations for peripheral interaction design and evaluation. The aim of the work presented in this paper is to support interaction design researchers and practitioners in anticipating and facilitating peripheral interaction with the designs they are evaluating or developing.
Ban, H, Uy, B, Pathirana, SW, Henderson, I, Mirza, O & Zhu, X 2015, 'Time-dependent behaviour of composite beams with blind bolts under sustained loads', Journal of Constructional Steel Research, vol. 112, pp. 196-207.
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Ban, Y & Chen, X 2015, 'Counter-diabatic driving for fast spin control in a two-electron double quantum dot', Scientific Reports, vol. 4, no. 1.
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Banasiak, LJ, Indraratna, B, Lugg, G, Pathirage, U, McIntosh, G & Rendell, N 2015, 'Permeable reactive barrier rejuvenation by alkaline wastewater', Environmental Geotechnics, vol. 2, no. 1, pp. 45-55.
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Chemical armouring of recycled concrete in a permeable reactive barrier (PRB) used for the neutralisation of acidic groundwater in acid sulfate soil terrain significantly decreases its acid neutralising capacity (ANC) by approximately 50% compared with its theoretical ANC. A long-term column test was conducted under simulated field groundwater conditions to assess the re-conditioning of armoured recycled concrete aggregates with alkaline wastewater, with the aim to restore and enhance the ANC and longevity of the PRB. The benefits of alkaline wastewater injection included sharp but short enhancement of the recycled concretes’ ANC, as indicated by an increase in effluent pH (pH 3 to 7·7) and alkalinity (0 to 21·6 mM CaCO3) and a reduction in oxidation reduction potential (ORP, 530 to 160–200 mV). While the results showed that the alkaline wastewater did not significantly reduce chemical armouring, it aided in the liberation of lodged mineral precipitates between concrete aggregates, reducing the severity of chemical and physical clogging. Batch tests demonstrated that, when exposed to acidic water, the ANC of recycled concrete pre-conditioned with alkaline wastewater was enhanced as indicated by higher pH, lower ORP and greater release of calcium (Ca2+) and alkalinity, compared to non-pre-conditioned concrete.
Bandyopadhyay, S, Cosentino, A, Johnston, N, Russo, V, Watrous, J & Yu, N 2015, 'Limitations on Separable Measurements by Convex Optimization', IEEE Transactions on Information Theory, vol. 61, no. 6, pp. 3593-3604.
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Bano, M & Zowghi, D 2015, 'A systematic review on the relationship between user involvement and system success', INFORMATION AND SOFTWARE TECHNOLOGY, vol. 58, pp. 148-169.
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© 2014 Elsevier B.V. All rights reserved. Context: For more than four decades it has been intuitively accepted that user involvement (UI) during system development lifecycle leads to system success. However when the researchers have evaluated the user involvement and system success (UI-SS) relationship empirically, the results were not always positive. Objective: Our objective was to explore the UI-SS relationship by synthesizing the results of all the studies that have empirically investigated this complex phenomenon. Method: We performed a Systematic Literature Review (SLR) following the steps provided in the guidelines of Evidence Based Software Engineering. From the resulting studies we extracted data to answer our 9 research questions related to the UI-SS relationship, identification of users, perspectives of UI, benefits, problems and challenges of UI, degree and level of UI, relevance of stages of software development lifecycle (SDLC) and the research method employed on the UI-SS relationship. Results: Our systematic review resulted in selecting 87 empirical studies published during the period 1980-2012. Among 87 studies reviewed, 52 reported that UI positively contributes to system success, 12 suggested a negative contribution and 23 were uncertain. The UI-SS relationship is neither direct nor binary, and there are various confounding factors that play their role. The identification of users, their degree/level of involvement, stage of SDLC for UI, and choice of research method have been claimed to have impact on the UI-SS relationship. However, there is not sufficient empirical evidence available to support these claims. Conclusion: Our results have revealed that UI does contribute positively to system success. But it is a double edged sword and if not managed carefully it may cause more problems than benefits. Based on the analysis of 87 studies, we were able to identify factors for effective management of UI alluding to the causes for inconsistency in ...
Barthelmey, A, Lemmerz, K, Lenkenhoff, K, Brambach, T, Nuding, W, Deuse, J & Kuhlenkötter, B 2015, 'Digital representation in automationML - Automatic creation and provision of technical documentation', WT Werkstattstechnik, vol. 105, no. 11-12, pp. 843-848.
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This paper presents an approach to link technical documentation with design data of machinery and plants using the data exchange format AutomationML. Primarily scheduled for the exchange of design data the format will be expanded by documentation features and aspects. Due to the combination of documentation and design data an up to date virtual image of a cyber-physical production system is accomplished. This is an important partial step towards intelligent creation and usage of technical documentation.
Bastidas-Arteaga, E & Stewart, MG 2015, 'Damage risks and economic assessment of climate adaptation strategies for design of new concrete structures subject to chloride-induced corrosion', Structural Safety, vol. 52, no. PA, pp. 40-53.
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Reinforced concrete (RC) structures are subject to environmental actions affecting their performance, serviceability and safety. Among these actions, chloride ingress leads to corrosion initiation and its interaction with service loading could reduce its operational life. Experimental evidence indicates that chloride ingress is highly influenced by weather conditions in the surrounding environment and therefore by climate change. Consequently, both structural design and maintenance should be adapted to these new environmental conditions. This work focuses on the assessment of the costs and benefits of two climate adaptation strategies for new RC structures placed in chloride-contaminated environments under various climate change scenarios. Their cost-effectiveness is measured in terms of the benefit-to-cost ratio (BCR) and the probability that BCR exceeds unity - i.e., Pr(BCR. > 1). It was found that increasing concrete strength grade is more cost-effective than increasing design cover. The results also indicate that the cost-effectiveness of a given adaptation strategy depends mainly on the type of structural component, exposure conditions and climate change scenarios.
Bautista, MG, Dutkiewicz, E & Heimlich, M 2015, 'Subthreshold Energy Harvesters Circuits for Biomedical Implants Applications', Proceedings of the 10th EAI International Conference on Body Area Networks, vol. 16, no. 9, pp. 1-5.
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This paper reviews the state-of-art of the subthreshold level design energy harvesters for powering biomedical implants. Power consumption and lifespan are crucial requirements for the electronic circuitry of implantable systems. In order to meet these challenging requirements, a design for an energy harvester that operates in a subthreshold level offers a promising solution.
Beckers, A, Van Peer, G, Carter, DR, Gartlgruber, M, Herrmann, C, Agarwal, S, Helsmoortel, HH, Althoff, K, Molenaar, JJ, Cheung, BB, Schulte, JH, Benoit, Y, Shohet, JM, Westermann, F, Marshall, GM, Vandesompele, J, De Preter, K & Speleman, F 2015, 'MYCN-driven regulatory mechanisms controlling LIN28B in neuroblastoma', Cancer Letters, vol. 366, no. 1, pp. 123-132.
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Beckers, A, Van Peer, G, Carter, DR, Mets, E, Althoff, K, Cheung, BB, Schulte, JH, Mestdagh, P, Vandesompele, J, Marshall, GM, De Preter, K & Speleman, F 2015, 'MYCN-targeting miRNAs are predominantly downregulated during MYCN-driven neuroblastoma tumor formation', Oncotarget, vol. 6, no. 7, pp. 5204-5216.
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Behbood, V, Lu, J, Zhang, G & Pedrycz, W 2015, 'Multistep Fuzzy Bridged Refinement Domain Adaptation Algorithm and Its Application to Bank Failure Prediction', IEEE TRANSACTIONS ON FUZZY SYSTEMS, vol. 23, no. 6, pp. 1917-1935.
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Machine learning plays an important role in data classification and data-based prediction. In some real world applications, however, the training data (coming from the source domain) and test data (from the target domain) come from different domains or time periods, and this may result in the different distributions of some features. Moreover, the values of the features and/or labels of the data sets might be non-numeric and involve vague values. Traditional learning-based prediction and classification methods cannot handle these two issues. In this study, we propose a multi-step fuzzy bridged refinement domain adaptation algorithm, which offers an effective way to deal with both issues. It utilizes a concept of similarity to modify the labels of the target instances that were initially predicted by a shift-unaware model. It then refines the labels using instances that are most similar to a given target instance. These instances are extracted from mixture domains composed of source and target domains. The proposed algorithm is built on a basis of some data and refines the labels, thus performing completely independently of the shift-unaware prediction model. The algorithm uses a fuzzy set-based approach to deal with the vague values of the features and labels. Four different data sets are used in the experiments to validate the proposed algorithm. The results, which are compared with those generated by the existing domain adaptation methods, demonstrate a significant improvement in prediction accuracy in both the above-mentioned data sets.
Belhaj, D, Baccar, R, Jaabiri, I, Bouzid, J, Kallel, M, Ayadi, H & Zhou, JL 2015, 'Fate of selected estrogenic hormones in an urban sewage treatment plant in Tunisia (North Africa)', Science of The Total Environment, vol. 505, pp. 154-160.
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Bennett, NS, Wight, NM, Popuri, SR & Bos, J-WG 2015, 'Efficient thermoelectric performance in silicon nano-films by vacancy-engineering', Nano Energy, vol. 16, pp. 350-356.
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Berta, M & Tomamichel, M 2015, 'The Fidelity of Recovery is Multiplicative', IEEE Transactions on Information Theory, vol. 62, no. 4, pp. 1758-1763.
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Fawzi and Renner [Commun. Math. Phys. 340(2):575, 2015] recently established
a lower bound on the conditional quantum mutual information (CQMI) of
tripartite quantum states $ABC$ in terms of the fidelity of recovery (FoR),
i.e. the maximal fidelity of the state $ABC$ with a state reconstructed from
its marginal $BC$ by acting only on the $C$ system. The FoR measures quantum
correlations by the local recoverability of global states and has many
properties similar to the CQMI. Here we generalize the FoR and show that the
resulting measure is multiplicative by utilizing semi-definite programming
duality. This allows us to simplify an operational proof by Brandao et al.
[Phys. Rev. Lett. 115(5):050501, 2015] of the above-mentioned lower bound that
is based on quantum state redistribution. In particular, in contrast to the
previous approaches, our proof does not rely on de Finetti reductions.
Berta, M, Fawzi, O & Tomamichel, M 2015, 'On Variational Expressions for Quantum Relative Entropies', Letters in Mathematical Physics, vol. 107, no. 12, pp. 2239-2265.
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Distance measures between quantum states like the trace distance and the
fidelity can naturally be defined by optimizing a classical distance measure
over all measurement statistics that can be obtained from the respective
quantum states. In contrast, Petz showed that the measured relative entropy,
defined as a maximization of the Kullback-Leibler divergence over projective
measurement statistics, is strictly smaller than Umegaki's quantum relative
entropy whenever the states do not commute. We extend this result in two ways.
First, we show that Petz' conclusion remains true if we allow general positive
operator valued measures. Second, we extend the result to Renyi relative
entropies and show that for non-commuting states the sandwiched Renyi relative
entropy is strictly larger than the measured Renyi relative entropy for $\alpha
\in (\frac12, \infty)$, and strictly smaller for $\alpha \in [0,\frac12)$. The
latter statement provides counterexamples for the data-processing inequality of
the sandwiched Renyi relative entropy for $\alpha < \frac12$. Our main tool is
a new variational expression for the measured Renyi relative entropy, which we
further exploit to show that certain lower bounds on quantum conditional mutual
information are superadditive.
Bhuiya, MMK, Rasul, MG, Khan, MMK, Ashwath, N, Azad, AK & Mofijur, M 2015, 'Optimisation of Oil Extraction Process from Australian Native Beauty Leaf Seed (Calophyllum Inophyllum)', Energy Procedia, vol. 75, pp. 56-61.
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Biabani, MM & Indraratna, B 2015, 'An evaluation of the interface behaviour of rail subballast stabilised with geogrids and geomembranes', Geotextiles and Geomembranes, vol. 43, no. 3, pp. 240-249.
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Blamires, SJ, Liao, C-P, Chang, C-K, Chuang, Y-C, Wu, C-L, Blackledge, TA, Sheu, H-S & Tso, I-M 2015, 'Mechanical Performance of Spider Silk Is Robust to Nutrient-Mediated Changes in Protein Composition', Biomacromolecules, vol. 16, no. 4, pp. 1218-1225.
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Blamires, SJ, Piorkowski, D, Chuang, A, Tseng, Y-H, Toft, S & Tso, I-M 2015, 'Can differential nutrient extraction explain property variations in a predatory trap?', Royal Society Open Science, vol. 2, no. 3, pp. 140479-140479.
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Predators exhibit flexible foraging to facilitate taking prey that offer important nutrients. Because trap-building predators have limited control over the prey they encounter, differential nutrient extraction and trap architectural flexibility may be used as a means of prey selection. Here, we tested whether differential nutrient extraction induces flexibility in architecture and stickiness of a spider's web by feeding
Nephila pilipes
live crickets (CC), live flies (FF), dead crickets with the web stimulated by flies (CD) or dead flies with the web stimulated by crickets (FD). Spiders in the CD group consumed less protein per mass of lipid or carbohydrate, and spiders in the FF group consumed less carbohydrates per mass of protein. Spiders from the CD group built stickier webs that used less silk, whereas spiders in the FF group built webs with more radii, greater catching areas and more silk, compared with other treatments. Our results suggest that differential nutrient extraction is a likely explanation for prey-induced spider web architecture and stickiness variations.
Bliuc, D, Alarkawi, D, Nguyen, TV, Eisman, JA & Center, JR 2015, 'Risk of Subsequent Fractures and Mortality in Elderly Women and Men with Fragility Fractures with and without Osteoporotic Bone Density: The Dubbo Osteoporosis Epidemiology Study', Journal of Bone and Mineral Research, vol. 30, no. 4, pp. 637-646.
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Bliuc, D, Nguyen, ND, Alarkawi, D, Nguyen, TV, Eisman, JA & Center, JR 2015, 'Accelerated bone loss and increased post-fracture mortality in elderly women and men', Osteoporosis International, vol. 26, no. 4, pp. 1331-1339.
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Bonilla, CA, Merigó, JM & Torres-Abad, C 2015, 'Economics in Latin America: a bibliometric analysis', Scientometrics, vol. 105, no. 2, pp. 1239-1252.
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Boostani, AF, Mousavian, RT, Tahamtan, S, Yazdani, S, Khosroshahi, RA, Wei, D, Xu, JZ, Gong, D, Zhang, XM & Jiang, ZY 2015, 'Graphene sheets encapsulating SiC nanoparticles: A roadmap towards enhancing tensile ductility of metal matrix composites', Materials Science and Engineering: A, vol. 648, pp. 92-103.
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Bowers, ML, Gao, Y, Yang, L, Gaydosh, DJ, De Graef, M, Noebe, RD, Wang, Y & Mills, MJ 2015, 'Austenite grain refinement during load-biased thermal cycling of a Ni49.9Ti50.1 shape memory alloy', Acta Materialia, vol. 91, pp. 318-329.
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Bu, GP, Chanda, S, Guan, H, Jo, J, Blumenstein, M & Loo, YC 2015, 'Crack detection using a texture analysis-based technique for visual bridge inspection', Electronic Journal of Structural Engineering, vol. 14, no. 1, pp. 41-48.
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Bridge inspection is a pathway to bridge condition rating assessment, and is an essential element of any bridge management system (BMS). The success of a BMS is highly dependent on the quality of bridge inspection outcomes and accurate estimation of future bridge condition ratings. However, existing visual bridge inspection methods suffer several limitations due to human subjective judgment. In order to minimise such limitations, a feasibility study has been performed to enhance the current visual inspection method using optical image processing techniques. However, the accuracy of the inspection outcomes still requires further improvement. This paper proposes an automatic bridge inspection approach employing wavelet-based image features along with support vector machines (SVM) for automatic detection of cracks in bridge images. A two-stage approach is followed, in the first stage, a decision is made as whether an image should undergo a pre-processing step (depending on image characteristics); in the second stage, wavelet features are extracted from the image using a sliding window texture analysis-based technique. Consequently, an average accuracy of 92% (effect of training image types on accuracy) is obtained even when undertaking experiments with noisy and complex bridge images.
Bui, DT, Pradhan, B, Revhaug, I, Nguyen, DB, Pham, HV & Bui, QN 2015, 'A novel hybrid evidential belief function-based fuzzy logic model in spatial prediction of rainfall-induced shallow landslides in the Lang Son city area (Vietnam)', Geomatics, Natural Hazards and Risk, vol. 6, no. 3, pp. 243-271.
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Burdon, S & Dovey, KA 2015, 'Exploring the cultural basis of innovation', Journal of Innovation Management, vol. 3, no. 3, pp. 20-34.
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The paper explores the relationship between leadership, culture and innovation. Through an analysis of four enterprises, voted by their peers as having strong innovation-friendly cultures, we explicate the assumptions embedded in these innovation-supporting cultures, and outline the leadership practices that have created them. By locating the study within the interpretivist research paradigm and adopting the 'practice turn' perspective that has characterised recent leadership research, this study has been able to acknowledge and address the political dynamics involved in the creation of innovation-conducive cultures.
Burdon, S, Mooney, GR & Al-Kilidar, H 2015, 'Navigating service sector innovation using co-creation partnerships', JOURNAL OF SERVICE THEORY AND PRACTICE, vol. 25, no. 3, pp. 285-303.
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Purpose: This paper analyses a series of engineering services partnerships to better understand requisites needed in building high value co-creation alliances - especially where innovation is the strategic goal. Methodology/approach: Using a combination of quantitative surveys, qualitative `deep-dive assessments and a small number of in-situ mini-case investigations this research sets out to analyse 99 joint-venture innovation partnerships. These ventures represent a variety of asymmetric and symmetric alliances within the engineering services sector. Particular emphasis is given to those where the prerequisites for co-creative innovation are either in place or could be built. Findings: Partnering and progressing innovative ideas are important behaviours for organisations seeking higher levels of commercial success and competitive advantage. Navigating the partnering dynamic can also be harder than expected, potentially hindered by misunderstandings and differing expectations between enterprises. Particularly for symmetric endeavours success often hinges upon not only having clarity in the degree of innovation sought but also alignment as to the depth and stage of the partnering dynamic itself. However, when such collaboration works customer satisfaction and associated contract retention can increase significantly. Originality/value Most inter-company innovation projects historically seem to occur where one firm is significantly larger than the other. In contrast, this study highlights issues encountered when innovation co-creation projects are undertaken by a mature (as opposed to maturing) organisation in collaboration with partners where the power balance is similar between the two enterprises. In such cases, customer satisfaction surveys can be useful tools for objectively navigating the innovation co-creation experience.
Burton, GJ, Pineda, JA, Sheng, D & Airey, D 2015, 'Microstructural changes of an undisturbed, reconstituted and compacted high plasticity clay subjected to wetting and drying', Engineering Geology, vol. 193, pp. 363-373.
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Cagno, E, Ramirez-Portilla, A & Trianni, A 2015, 'Linking energy efficiency and innovation practices: Empirical evidence from the foundry sector', Energy Policy, vol. 83, pp. 240-256.
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Cagno, E, Trianni, A, Abeelen, C, Worrell, E & Miggiano, F 2015, 'Barriers and drivers for energy efficiency: Different perspectives from an exploratory study in the Netherlands', Energy Conversion and Management, vol. 102, pp. 26-38.
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Cai, Q, Turner, BD, Sheng, D & Sloan, S 2015, 'The kinetics of fluoride sorption by zeolite: Effects of cadmium, barium and manganese', Journal of Contaminant Hydrology, vol. 177-178, pp. 136-147.
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Can Wang, Longbing Cao & Chi-Hung Chi 2015, 'Formalization and Verification of Group Behavior Interactions', IEEE Transactions on Systems, Man, and Cybernetics: Systems, vol. 45, no. 8, pp. 1109-1124.
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Canning, J 2015, 'Lab-in-a-microfibre', Springer Series in Surface Sciences, vol. 56, pp. 209-232.
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The laboratory-in-a-fibre was originally envisaged around structured optical fibres and their two dimensional, potentially three-dimensional (3-D), variation in structure they enabled. In contrast to D-shaped fibres which have long been used as a test bed for novel optical components and more recently as the substrate for lab-on-a-chip technologies, or lab-on-fibre, it was a proposal which looked into the future of optical fibres well beyond optical transport conduits, imagining fibres as complex 3-D instruments with multiple waveguides and waveguide devices, both along and across the fibre to enable unprecedented multiple functionality and density. Whereas the D-fibre platform has since evolved into an enormously attractive “lab-on-a-fibre” stage, the vision remains largely unfulfilled but technological advances and new ideas will make its realisation inevitable, if slow. This included the merger of 3-D optical fibre innovations with growing lab-on-fibre innovations. Although the two-dimensional structuring of the optical fibres was central to the proposal of lab-in-a-fibre, it nonetheless has some key restrictions defined by the top-down approach to optical fibre production. Macroscopic drawing down of fibres places a directional impost that gives rise to the two-dimensional layout of micro and nano structured fibres; i.e. control is only in the cross-section of the fibre. As well there are huge thermodynamic imposts integrating materials into silica itself providing motivation for different approaches to be explored. Here, recently reported bottom-up self-assembly approaches to fabricate waveguides that have the potential of enabling total control of the nanostructure are reviewed. These can be done at room temperature demonstrating in principle how the problems can be solved and simultaneously legitimising a new concept—the lab-in-a-microfibre.
Canning, J 2015, 'Teaching in twenty-first-century higher education: reading Chekhov’s ‘A boring story’ to stimulate reflective practice', Reflective Practice, vol. 16, no. 4, pp. 497-507.
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Canning, J, Ast, S, Hossain, MA, Chan, H, Rutledge, PJ & Jamalipour, A 2015, 'Bend and twist intramolecular charge transfer and emission for selective metal ion sensing', Optical Materials Express, vol. 5, no. 11, pp. 2675-2681.
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Canning, J, Qian, J & Cook, K 2015, 'Large dynamic range SPR measurements using a ZnSe prism', Photonic Sensors, vol. 5, no. 3, pp. 278-283.
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Cao, L, Yu, PS & Kumar, V 2015, 'Nonoccurring Behavior Analytics: A New Area', IEEE Intelligent Systems, vol. 30, no. 6, pp. 4-11.
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Cao, W & Cao, L 2015, 'Financial Crisis Forecasting via Coupled Market State Analysis', IEEE Intelligent Systems, vol. 30, no. 2, pp. 18-25.
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Carter, DR, Murray, J, Cheung, BB, Gamble, L, Koach, J, Tsang, J, Sutton, S, Kalla, H, Syed, S, Gifford, AJ, Issaeva, N, Biktasova, A, Atmadibrata, B, Sun, Y, Sokolowski, N, Ling, D, Kim, PY, Webber, H, Clark, A, Ruhle, M, Liu, B, Oberthuer, A, Fischer, M, Byrne, J, Saletta, F, Thwe, LM, Purmal, A, Haderski, G, Burkhart, C, Speleman, F, De Preter, K, Beckers, A, Ziegler, DS, Liu, T, Gurova, KV, Gudkov, AV, Norris, MD, Haber, M & Marshall, GM 2015, 'Therapeutic targeting of the MYC signal by inhibition of histone chaperone FACT in neuroblastoma', Science Translational Medicine, vol. 7, no. 312.
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Histone chaperone FACT acts in a positive feedback loop with MYCN and is a therapeutic target in neuroblastoma.
Casanovas, M, Torres-Martinez, A & Merigo, JM 2015, 'DECISION MAKING PROCESSES OF NON-LIFE INSURANCE PRICING USING FUZZY LOGIC AND OWA OPERATORS', ECONOMIC COMPUTATION AND ECONOMIC CYBERNETICS STUDIES AND RESEARCH, vol. 49, no. 2, pp. 169-187.
Casanovas, M, Torres-Martínez, A & Merigó, JM 2015, 'Decision making processes of non-life insurance pricing using fuzzy logic and OWA operators', Economic Computation and Economic Cybernetics Studies and Research, vol. 49, no. 2, pp. 1-19.
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Setting a commercial premium for an insurance policy is a complex process, even, though statistical tools provide fairly reliable information on the behavior of the frequency and cost of claims differentiated by risk profiles reflected in pure premium calculations. However lately setting the price the customer must pay has not been easy, because of the uncertainty of, having to use subjective criteria to analyze how demand may be affected by different price alternatives and economic situations. This article aims to develop this process in two stages. The first stage is carried out with the opinion of experts applied to uncertain numbers and Ordered Weighted Average (OWA) operators to assess the overall benefits of each profile to choose the best alternative. The second stage, which uses Heavy OWA (HOWA) operators, is based on the results obtained in the first stage and chooses a general price alternative for all profiles.
Castel, A & Foster, SJ 2015, 'Bond strength between blended slag and Class F fly ash geopolymer concrete with steel reinforcement', Cement and Concrete Research, vol. 72, pp. 48-53.
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Castel, A & Nasser, A 2015, 'Influence of pre-existing oxides layer and interface condition with carbonated concrete on active reinforcing steel corrosion', Materials and Corrosion, vol. 66, no. 3, pp. 206-214.
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Castel, A, Gilbert, RI & Ranzi, G 2015, 'Closure to “Instantaneous Stiffness of Cracked Reinforced Concrete Including Steel-Concrete Interface Damage and Long-Term Effects” by Arnaud Castel, Raymond Ian Gilbert, and Gianluca Ranzi', Journal of Structural Engineering, vol. 141, no. 6, pp. 07015006-07015006.
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Castel, A, Khan, I & Gilbert, RI 2015, 'Development length in reinforced concrete structures exposed to steel corrosion: A correction factor for AS3600 provisions', Australian Journal of Structural Engineering, vol. 16, no. 2, pp. 89-98.
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© Institution of Engineers Australia, 2015. In reinforced concrete structures, reinforcement corrosion induces concrete cracking and leads to a reduction in both the steel cross-section and the steel-concrete bond strength and ultimately affects the development length. In this paper, a new correction factor is proposed to calculate the development length of reinforced concrete structures prone to corrosion. A scalar bond damage parameter is introduced to relate bond strength reduction to corrosion. The new model agrees well with all experimental results found in the literature. The bond damage parameter is further used as a correction factor modifying the AS3600 provisions for the development length of reinforcement in reinforced concrete structures located in a saline environment. The relationship between steel-concrete bond damage and corrosion induced concrete cracking is also discussed.
Chae, S-R, Noeiaghaei, T, Jang, H-C, Sahebi, S, Jassby, D, Shon, H-K, Park, P-K, Kim, J-O & Park, J-S 2015, 'Effects of natural organic matter on separation of the hydroxylated fullerene nanoparticles by cross-flow ultrafiltration membranes from water', SEPARATION AND PURIFICATION TECHNOLOGY, vol. 140, pp. 61-68.
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Chakraborty, C, Ho-Ching Iu, H & Dah-Chuan Lu, D 2015, 'Power converters, control, and energy management for distributed generation', IEEE Transactions on Industrial Electronics, vol. 62, no. 7, pp. 4466-4470.
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Chakraborty, S, Mengersen, K, Fidge, C, Ma, L & Lassen, D 2015, 'Multifaceted Modelling of Complex Business Enterprises', PLOS ONE, vol. 10, no. 8, pp. e0134052-e0134052.
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Chakravadhanula, M, Hampton, CN, Chodavadia, P, Ozols, V, Zhou, L, Catchpoole, D, Xu, J, Erdreich-Epstein, A & Bhardwaj, RD 2015, 'Wnt pathway in atypical teratoid rhabdoid tumors', Neuro-Oncology, vol. 17, no. 4, pp. 526-535.
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© The Author(s) 2014. Published by Oxford University Press on behalf of the Society for Neuro-Oncology. All rights reserved. Background: Atypical teratoid rhabdoid tumor (ATRT) is an aggressive pediatric brain tumor with limited therapeutic options. The hypothesis for this study was that the Wnt pathway triggered by the Wnt5B ligand plays an important role in ATRT biology. To address this hypothesis, the role of WNT5B and other Wnt pathway genes was analyzed in ATRT tissues and ATRT primary cell lines. Methods: Transcriptome-sequencing analyses were performed using nanoString platforms, immunohistochemistry, Western blotting, quantitative reverse transcriptase PCR, immunoprecipitation, short interference RNA studies, cell viability studies, and drug dose response (DDR) assays. Results: Our transcriptome-sequencing results of Wnt pathway genes from ATRT tissues and cell lines indicated that the WNT5B gene is significantly upregulated in ATRT samples compared with nontumor brain samples. These results also indicated a differential expression of both canonical and noncanonical Wnt genes. Imunoprecipitation studies indicated that Wnt5B binds to Frizzled1 and Ryk receptors. Inhibition of WNT5B by short interference RNA decreased the expression of FRIZZLED1 and RYK. Cell viability studies a indicated significant decrease in cell viability by inhibiting Frizzled1 receptor. DDR assays showed promising results with some inhibitors. Conclusions: These promising therapeutic options will be studied further before starting a translational clinical trial. The success of these options will improve care for these patients.
Chamoli, U, Korkusuz, MH, Sabnis, AB, Manolescu, AR, Tsafnat, N & Diwan, AD 2015, 'Global and segmental kinematic changes following sequential resection of posterior osteoligamentous structures in the lumbar spine: An in vitro biomechanical investigation using pure moment testing protocols', Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, vol. 229, no. 11, pp. 812-821.
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Lumbar spinal surgeries may compromise the integrity of posterior osteoligamentous structures implicating mechanical stability. Circumstances necessitating a concomitant surgery to achieve restabilisation are not well understood. The main objective of this in vitro study was to quantify global and segmental (index and adjacent levels) kinematic changes in the lumbar spine following sequential resection of the posterior osteoligamentous structures using pure moment testing protocols. Six fresh frozen cadaveric kangaroo lumbar spines (T12–S1) were tested under a bending moment in flexion–extension, bilateral bending, and axial torsion in a 6-degree-of-freedom Kinematic Spine Simulator. Specimens were tested in the following order: intact state (D0), after interspinous and supraspinous ligaments transection between L4 and L5 (D1), further after a total bilateral facetectomy between L4 and L5 (D2). Segmental motions at the cephalad, damaged, and caudal levels were recorded using an infrared-based motion tracking device. Following D1, no significant change in the global range of motion was observed in any of the bending planes. Following D2, a significant increase in the global range of motion from the baseline (D0) was observed in axial torsion (median normalised change +20%). At the damaged level, D2resulted in a significant increase in the segmental range of motion in flexion–extension (+77%) and axial torsion (+492%). Additionally, a significant decrease in the segmental range of motion in axial torsion (−35%) was observed at the caudal level following D2. These results suggest that a multi-segment lumbar spine acts as a mechanism for transmitting motions, and that a compromised joint may significantly alter motion transfer to adjacent segments. We conclude that the interspinous and supraspi...
Charaf, S, Wardle, JL, Sibbritt, DW, Lal, S & Callaway, LK 2015, 'Women's use of herbal and alternative medicines for preconception care', Australian and New Zealand Journal of Obstetrics and Gynaecology, vol. 55, no. 3, pp. 222-226.
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Use of complementary and alternative medicine (CAM), particularly herbal and alternative medicine supplements, for preconception care and fertility management is becoming increasingly common.To determine the factors associated with the use of CAMs by women for preconception care.412 women who had visited an antenatal 'first visit' clinic situated at a Brisbane obstetric hospital or had visited a private ultrasound clinic in the same city for the purposes of a routinely indicated ultrasound scan in the first trimester were recruited into the study. Data were collected via a cross-sectional questionnaire.Complementary and alternative medicines (not including multivitamins) were used during preconception by 8.3% of women attending for obstetric care. Approximately half (55.8%) of women taking herbal and alternative medicines ceased these medications on discovery of their pregnancy, though fewer (17.4%) ceased taking multivitamin supplements. Baseline characteristics (age, education and income) are not significantly different between CAM users and those who did not take CAMs preconception. The results of statistical analyses showed that only visiting a practitioner to check for health (OR = 2.00; 95% CI: 1.33, 3.00) and trying to lose weight prior to pregnancy (OR = 1.53; 95% CI: 1.00, 2.36) were the key predictors for women using CAM during preconception.Women do consume CAMs to enhance preconception care to a certain extent, though CAM users remain in the minority. CAM users also tend to cease use once pregnant.
Che, E, Tuan, HD, Minh Tam Tam, HH & Nguyen, HH 2015, 'Successive Interference Mitigation in Multiuser MIMO Channels', IEEE Transactions on Communications, vol. 63, no. 6, pp. 2185-2199.
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Chekli, L, Galloux, J, Zhao, YX, Gao, BY & Shon, HK 2015, 'Coagulation performance and floc characteristics of polytitanium tetrachloride (PTC) compared with titanium tetrachloride (TiCl4) and iron salts in humic acid-kaolin synthetic water treatment', SEPARATION AND PURIFICATION TECHNOLOGY, vol. 142, pp. 155-161.
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Chekli, L, Roy, M, Tijing, LD, Donner, E, Lombi, E & Shon, HK 2015, 'Agglomeration behaviour of titanium dioxide nanoparticles in river waters: A multi-method approach combining light scattering and field-flow fractionation techniques', JOURNAL OF ENVIRONMENTAL MANAGEMENT, vol. 159, pp. 135-142.
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Chekli, L, Zhao, YX, Tijing, LD, Phuntsho, S, Donner, E, Lombi, E, Gao, BY & Shon, HK 2015, 'Aggregation behaviour of engineered nanoparticles in natural waters: Characterising aggregate structure using on-line laser light scattering', JOURNAL OF HAZARDOUS MATERIALS, vol. 284, pp. 190-200.
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Chelliah, J, Sood, S & Scholfield, S 2015, 'Realising the strategic value of RFID in academic libraries: a case study of the University of Technology Sydney', AUSTRALIAN LIBRARY JOURNAL, vol. 64, no. 2, pp. 113-127.
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Radio Frequency Identification (RFID) technology is being increasingly implemented in academic libraries due to a promise of increased collections management efficiency. This paper reports on the recent implementation of RFID technology in the library at the University of Technology Sydney, providing insights into the change management process of RFID implementation. The paper focuses on the implications of the implementation and indigenisation of RFID technology for three specific and symbiotic areas of the library: people, processes and technology. Data from interviews with eight participants involved at various levels of the academic library were collected. This paper develops a best practice model through the insights gained by the people involved in the RFID implementation. The case study posits the dynamic relationships between people, processes and technology as greatly impacted by the implementation process, and analyses the divergence between projected and actual outcomes in the implementation process.
Chen, C, Indraratna, B, McDowell, G & Rujikiatkamjorn, C 2015, 'Discrete element modelling of lateral displacement of a granular assembly under cyclic loading', Computers and Geotechnics, vol. 69, pp. 474-484.
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Chen, G, Wang, Z, Nghiem, LD, Li, X-M, Xie, M, Zhao, B, Zhang, M, Song, J & He, T 2015, 'Treatment of shale gas drilling flowback fluids (SGDFs) by forward osmosis: Membrane fouling and mitigation', DESALINATION, vol. 366, pp. 113-120.
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Chen, H, Zhang, G, Zhu, D & Lu, J 2015, 'A patent time series processing component for technology intelligence by trend identification functionality', NEURAL COMPUTING & APPLICATIONS, vol. 26, no. 2, pp. 345-353.
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Chen, J, Huang, Z, Wang, C, Porter, S, Wang, B, Lie, W & Liu, HK 2015, 'Sodium-difluoro(oxalato)borate (NaDFOB): a new electrolyte salt for Na-ion batteries', Chemical Communications, vol. 51, no. 48, pp. 9809-9812.
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Compatible with various common solvents, a new electrolyte salt NaDFOB has been studied, which enables excellent reversible capacity and high rate capability when used in Na/Na0.44MnO2 half cells.
Chen, J, Ji, Z, Yu, N & Zeng, B 2015, 'Detecting Consistency of Overlapping Quantum Marginals by Separability', Phys. Rev. A, vol. 93, no. 3, p. 032105.
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The quantum marginal problem asks whether a set of given density matrices are
consistent, i.e., whether they can be the reduced density matrices of a global
quantum state. Not many non-trivial analytic necessary (or sufficient)
conditions are known for the problem in general. We propose a method to detect
consistency of overlapping quantum marginals by considering the separability of
some derived states. Our method works well for the $k$-symmetric extension
problem in general, and for the general overlapping marginal problems in some
cases. Our work is, in some sense, the converse to the well-known $k$-symmetric
extension criterion for separability.
Chen, J, Liu, B, Zhou, H, Gui, L, Liu, N & Wu, Y 2015, 'Providing Vehicular Infotainment Service Using VHF/UHF TV Bands via Spatial Spectrum Reuse', IEEE Transactions on Broadcasting, vol. 61, no. 2, pp. 279-289.
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Chen, J, Xia, G, Guo, Z, Huang, Z, Liu, H & Yu, X 2015, 'Porous Ni nanofibers with enhanced catalytic effect on the hydrogen storage performance of MgH2', Journal of Materials Chemistry A, vol. 3, no. 31, pp. 15843-15848.
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Porous Ni nanofibers (NFs) were synthesized via a single-nozzle electrospinning technique with subsequent calcination and reduction.
Chen, J-Y, Ji, Z, Liu, Z-X, Shen, Y & Zeng, B 2015, 'Geometry of reduced density matrices for symmetry-protected topological phases', Phys. Rev. A, vol. 93, no. 1, p. 012309.
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In this paper, we study the geometry of reduced density matrices for states
with symmetry-protected topological (SPT) order. We observe ruled surface
structures on the boundary of the convex set of low dimension projections of
the reduced density matrices. In order to signal the SPT order using ruled
surfaces, it is important that we add a symmetry-breaking term to the boundary
of the system---no ruled surface emerges in systems without boundary or when we
add a symmetry-breaking term representing a thermodynamic quantity. Although
the ruled surfaces only appear in the thermodynamic limit where the
ground-state degeneracy is exact, we analyze the precision of our numerical
algorithm and show that a finite system calculation suffices to reveal the
ruled surface structures.
Chen, L, Shern, JF, Wei, JS, Yohe, ME, Song, YK, Hurd, L, Liao, H, Catchpoole, D, Skapek, SX, Barr, FG, Hawkins, DS & Khan, J 2015, 'Clonality and Evolutionary History of Rhabdomyosarcoma', PLOS Genetics, vol. 11, no. 3, pp. e1005075-e1005075.
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To infer the subclonality of rhabdomyosarcoma (RMS) and predict the temporal order of genetic events for the tumorigenic process, and to identify novel drivers, we applied a systematic method that takes into account germline and somatic alterations in 44 tumor-normal RMS pairs using deep whole-genome sequencing. Intriguingly, we find that loss of heterozygosity of 11p15.5 and mutations in RAS pathway genes occur early in the evolutionary history of the PAX-fusion-negative-RMS (PFN-RMS) subtype. We discover several early mutations in non-RAS mutated samples and predict them to be drivers in PFN-RMS including recurrent mutation of PKN1. In contrast, we find that PAX-fusion-positive (PFP) subtype tumors have undergone whole-genome duplication in the late stage of cancer evolutionary history and have acquired fewer mutations and subclones than PFN-RMS. Moreover we predict that the PAX3-FOXO1 fusion event occurs earlier than the whole genome duplication. Our findings provide information critical to the understanding of tumorigenesis of RMS.
Chen, M, Tsang, IW, Tan, M & Cham, TJ 2015, 'A Unified Feature Selection Framework for Graph Embedding on High Dimensional Data', IEEE Transactions on Knowledge and Data Engineering, vol. 27, no. 6, pp. 1465-1477.
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Chen, Q & Indraratna, B 2015, 'Deformation Behavior of Lignosulfonate-Treated Sandy Silt under Cyclic Loading', Journal of Geotechnical and Geoenvironmental Engineering, vol. 141, no. 1, pp. 06014015-06014015.
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Chen, Q & Indraratna, B 2015, 'Shear behaviour of sandy silt treated with lignosulfonate', Canadian Geotechnical Journal, vol. 52, no. 8, pp. 1180-1185.
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Chemical stabilizers (e.g., cement, lime, gypsum, and other alkaline admixtures) have been widely used to enhance the strength and compressibility properties of subgrade soils. However, traditional chemical stabilizers are not always acceptable in Australia because they often pose a threat to the surrounding environment. Moreover, traditionally treated soils usually exhibit excessive brittle behaviour, which is often undesirable for transport infrastructure such as rail embankments and airport runways. To establish an alternative stabilizer that could overcome the above problems, this note presents a series of experimental results on the use of lignosulfonate (by-product of timber and paper industry), an environmentally friendly soil stabilizer effective for treating fine sandy silt that formed the bulk of an embankment fill at Penrith, Australia. The effects of lignosulfonate treatment on the shear behaviour of treated soil, including the stress–strain relationships, and the corresponding development of excess pore pressure and volumetric responses under monotonic triaxial testing are discussed.
Chen, T, Yu, N & Han, T 2015, 'Continuous-time orbit problems are decidable in polynomial-time', Information Processing Letters, vol. 115, no. 1, pp. 11-14.
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Chen, W, Huang, Z, Wu, G & Chen, P 2015, 'New synthetic procedure for NaNH2(BH3)2 and evaluation of its hydrogen storage properties', Science China Chemistry, vol. 58, no. 1, pp. 169-173.
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Chen, W, Huang, Z, Wu, G, He, T, Li, Z, Chen, J, Guo, Z, Liu, H & Chen, P 2015, 'Guanidinium octahydrotriborate: an ionic liquid with high hydrogen storage capacity', Journal of Materials Chemistry A, vol. 3, no. 21, pp. 11411-11416.
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Guanidinium octahydrotriborate, with a melting point of <−10 °C, releases >10 wt% high purity hydrogen below 100 °C.
Chen, X, Guo, J, Xie, G-J, Liu, Y, Yuan, Z & Ni, B-J 2015, 'A new approach to simultaneous ammonium and dissolved methane removal from anaerobic digestion liquor: A model-based investigation of feasibility', Water Research, vol. 85, pp. 295-303.
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Chen, X, Ni, W, Wang, X & Sun, Y 2015, 'Provisioning quality-of-service to energy harvesting wireless communications', IEEE Communications Magazine, vol. 53, no. 4, pp. 102-109.
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Chen, Y, Zhang, X, Feng, Y, Liang, J & Chen, H 2015, 'Sunburst with ordered nodes based on hierarchical clustering: a visual analyzing method for associated hierarchical pesticide residue data', Journal of Visualization, vol. 18, no. 2, pp. 237-254.
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According to the characteristics of pesticide residue data and analyzing requirements in food safety fields, we presented a visual analyzing method for associated hierarchical data, called sunburst with ordered nodes based on hierarchical clustering (SONHC). SONHC arranged the leaf nodes in sunburst in order using hierarchical clustering algorithm, put the associated dataset as a node in center of the sunburst, and connected it with the associated leaf nodes in sunburst using colored lines. So, it can present not only two hierarchical structures but also the relationships between them. Based on SONHC and some interaction techniques (clicking, contraction and expansion, etc) we developed an associated visual analyzing system (AVAS) for pesticide residues detection results data, which can help users to inspect the hierarchical structure of pesticide and agricultural products and to explore the associations between pesticides and agricultural products, and associations between different pesticides. The results of user experience test showed that SONHC algorithm overperforms than SA and SR algorithm in ULE and ULE’s variance. AVAS system is effective in helping users to analyze the pesticide residues data. Furthermore, SONHC algorithm can also be adopted to analyze associated hierarchical data in other fields, such as finance, insurance and e-commerce.
Cheng, H-C, Hsieh, M-H & Tomamichel, M 2015, 'Exponential Decay of Matrix $Φ$-Entropies on Markov Semigroups with Applications to Dynamical Evolutions of Quantum Ensembles', Journal of Mathematical Physics, 58(9), 092202, Sep 2017, vol. 58, no. 9.
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In the study of Markovian processes, one of the principal achievements is the
equivalence between the $\Phi$-Sobolev inequalities and an exponential decrease
of the $\Phi$-entropies. In this work, we develop a framework of Markov
semigroups on matrix-valued functions and generalize the above equivalence to
the exponential decay of matrix $\Phi$-entropies. This result also specializes
to spectral gap inequalities and modified logarithmic Sobolev inequalities in
the random matrix setting. To establish the main result, we define a
non-commutative generalization of the carr\'e du champ operator, and prove a de
Bruijn's identity for matrix-valued functions.
The proposed Markov semigroups acting on matrix-valued functions have
immediate applications in the characterization of the dynamical evolution of
quantum ensembles. We consider two special cases of quantum unital channels,
namely, the depolarizing channel and the phase-damping channel. In the former,
since there exists a unique equilibrium state, we show that the matrix
$\Phi$-entropy of the resulting quantum ensemble decays exponentially as time
goes on. Consequently, we obtain a stronger notion of monotonicity of the
Holevo quantity - the Holevo quantity of the quantum ensemble decays
exponentially in time and the convergence rate is determined by the modified
log-Sobolev inequalities. However, in the latter, the matrix $\Phi$-entropy of
the quantum ensemble that undergoes the phase-damping Markovian evolution
generally will not decay exponentially. This is because there are multiple
equilibrium states for such a channel.
Finally, we also consider examples of statistical mixing of Markov semigroups
on matrix-valued functions. We can explicitly calculate the convergence rate of
a Markovian jump process defined on Boolean hypercubes, and provide upper
bounds of the mixing time on these types of examples.
Cheng, J, Kim, J, Shao, J & Zhang, W 2015, 'Robust linear pose graph-based SLAM', Robotics and Autonomous Systems, vol. 72, pp. 71-82.
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Cheng, X, Jiang, Z, Wei, D, Hao, L, Zhao, J & Jiang, L 2015, 'Oxide scale characterization of ferritic stainless steel and its deformation and friction in hot rolling', Tribology International, vol. 84, pp. 61-70.
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Cheng, X, Jiang, Z, Wei, D, Zhao, J, Monaghan, BJ, Longbottom, RJ & Jiang, L 2015, 'High temperature oxidation behaviour of ferritic stainless steel SUS 430 in humid air', Metals and Materials International, vol. 21, no. 2, pp. 251-259.
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Cheng, X, Jiang, Z, Zhao, J, Wei, D, Hao, L, Peng, J, Luo, M, Ma, L, Luo, S & Jiang, L 2015, 'Investigation of oxide scale on ferritic stainless steel B445J1M and its tribological effect in hot rolling', Wear, vol. 338-339, pp. 178-188.
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Cheung, BB, Tan, O, Koach, J, Liu, B, Shum, MSY, Carter, DR, Sutton, S, Po'uha, ST, Chesler, L, Haber, M, Norris, MD, Kavallaris, M, Liu, T, O'Neill, GM & Marshall, GM 2015, 'Thymosin-β4 is a determinant of drug sensitivity for Fenretinide and Vorinostat combination therapy in neuroblastoma', Molecular Oncology, vol. 9, no. 7, pp. 1484-1500.
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© 2015 Federation of European Biochemical Societies. Retinoids are an important component of neuroblastoma therapy at the stage of minimal residual disease, yet 40-50% of patients treated with 13- cis-retinoic acid (13- cis-RA) still relapse, indicating the need for more effective retinoid therapy. Vorinostat, or Suberoylanilide hydroxamic acid (SAHA), is a potent inhibitor of histone deacetylase (HDAC) classes I & II and has antitumor activity in vitro and in vivo. Fenretinide (4-HPR) is a synthetic retinoid which acts on cancer cells through both nuclear retinoid receptor and non-receptor mechanisms. In this study, we found that the combination of 4-HPR + SAHA exhibited potent cytotoxic effects on neuroblastoma cells, much more effective than 13- cis-RA + SAHA. The 4-HPR + SAHA combination induced caspase-dependent apoptosis through activation of caspase 3, reduced colony formation and cell migration in vitro, and tumorigenicity in vivo. The 4-HPR and SAHA combination significantly increased mRNA expression of thymosin-beta-4 (Tβ4) and decreased mRNA expression of retinoic acid receptor α (RARα). Importantly, the up-regulation of Tβ4 and down-regulation of RARα were both necessary for the 4-HPR + SAHA cytotoxic effect on neuroblastoma cells. Moreover, Tβ4 knockdown in neuroblastoma cells increased cell migration and blocked the effect of 4-HPR + SAHA on cell migration and focal adhesion formation. In primary human neuroblastoma tumor tissues, low expression of Tβ4 was associated with metastatic disease and predicted poor patient prognosis. Our findings demonstrate that Tβ4 is a novel therapeutic target in neuroblastoma, and that 4-HPR + SAHA is a potential therapy for the disease.
Chiaro, G, Indraratna, B & Tasalloti, SMA 2015, 'Predicting the behaviour of coal wash and steel slag mixtures under triaxial conditions', Canadian Geotechnical Journal, vol. 52, no. 3, pp. 367-373.
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The effective reuse and recycling of granular waste materials, namely coal wash (CW) and basic oxygen steel slag (BOS), are economically beneficial and environmentally sustainable. Nevertheless, due to the heterogeneity of these granular waste materials, the ultimate adoption of CW and BOS as structural fills must be supported by constitutive relationships capable of accurately describing the stress–strain behaviour under representative field loading conditions. In this paper, a critical state surface generalized plasticity model is presented, and its predictive capability using an explicit set of soil parameters is demonstrated for drained triaxial compression tests.
Chiaro, G, Indraratna, B, Tasalloti, SMA & Rujikiatkamjorn, C 2015, 'Optimisation of coal wash–slag blend as a structural fill', Proceedings of the Institution of Civil Engineers - Ground Improvement, vol. 168, no. 1, pp. 33-44.
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Coal wash (CW) and basic oxygen steel slag fines (BOS) are by-products of the coal mining and steel industries, respectively. Their effective reuse and recycling through large-scale geotechnical projects, such as port reclamation, is economically beneficial and environmentally sustainable. In this study, CW and BOS were blended in order to explore the possibility to obtain synthetic fills having geotechnical properties similar or superior to conventional fills, therefore suitable as a structural fill for the Port Kembla Outer Harbour reclamation near Wollongong City, Australia. A framework with four levels of acceptance is proposed in this paper to select granular waste as structural fill materials. This framework was used for optimising the CW-BOS blend. It was found that for the Port Kembla Outer Harbour reclamation, a CW-BOS blend with a BOS content between 30 and 45% can meet most geotechnical specifications (i.e. high shear strength and bearing capacity, low swelling and particle breakage levels, and adequate permeability) required for a suitable structural fill above the high tidal level.
Chin-Teng Lin, Pal, NR, Shang-Lin Wu, Yu-Ting Liu & Yang-Yin Lin 2015, 'An Interval Type-2 Neural Fuzzy System for Online System Identification and Feature Elimination', IEEE Transactions on Neural Networks and Learning Systems, vol. 26, no. 7, pp. 1442-1455.
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We propose an integrated mechanism for discarding derogatory features and extraction of fuzzy rules based on an interval type-2 neural fuzzy system (NFS)-in fact, it is a more general scheme that can discard bad features, irrelevant antecedent clauses, and even irrelevant rules. High-dimensional input variable and a large number of rules not only enhance the computational complexity of NFSs but also reduce their interpretability. Therefore, a mechanism for simultaneous extraction of fuzzy rules and reducing the impact of (or eliminating) the inferior features is necessary. The proposed approach, namely an interval type-2 Neural Fuzzy System for online System Identification and Feature Elimination (IT2NFS-SIFE), uses type-2 fuzzy sets to model uncertainties associated with information and data in designing the knowledge base. The consequent part of the IT2NFS-SIFE is of Takagi-Sugeno-Kang type with interval weights. The IT2NFS-SIFE possesses a self-evolving property that can automatically generate fuzzy rules. The poor features can be discarded through the concept of a membership modulator. The antecedent and modulator weights are learned using a gradient descent algorithm. The consequent part weights are tuned via the rule-ordered Kalman filter algorithm to enhance learning effectiveness. Simulation results show that IT2NFS-SIFE not only simplifies the system architecture by eliminating derogatory/irrelevant antecedent clauses, rules, and features but also maintains excellent performance.
Chitambar, E & Hsieh, M-H 2015, 'Relating the Resource Theories of Entanglement and Quantum Coherence', Phys. Rev. Lett., vol. 117, no. 2, p. 020402.
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Quantum coherence and quantum entanglement represent two fundamental features
of non-classical systems that can each be characterized within an operational
resource theory. In this paper, we unify the resource theories of entanglement
and coherence by studying their combined behavior in the operational setting of
local incoherent operations and classical communication (LIOCC). Specifically
we analyze the coherence and entanglement trade-offs in the tasks of state
formation and resource distillation. For pure states we identify the minimum
coherence-entanglement resources needed to generate a given state, and we
introduce a new LIOCC monotone that completely characterizes a state's optimal
rate of bipartite coherence distillation. This result allows us to precisely
quantify the difference in operational powers between global incoherent
operations, LIOCC, and local incoherent operations \textit{without} classical
communication. Finally, a bipartite mixed state is shown to have distillable
entanglement if and only if entanglement can be distilled by LIOCC, and we
strengthen the well-known Horodecki criterion for distillability.
Chitambar, E, Fortescue, B & Hsieh, M-H 2015, 'A Classical Analog to Entanglement Reversibility', Phys. Rev. Lett., vol. 115, no. 9, pp. 090501-5.
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In this letter we introduce the problem of secrecy reversibility. This asks
when two honest parties can distill secret bits from some tripartite
distribution $p_{XYZ}$ and transform secret bits back into $p_{XYZ}$ at equal
rates using local operation and public communication (LOPC). This is the
classical analog to the well-studied problem of reversibly concentrating and
diluting entanglement in a quantum state. We identify the structure of
distributions possessing reversible secrecy when one of the honest parties
holds a binary distribution, and it is possible that all reversible
distributions have this form. These distributions are more general than what is
obtained by simply constructing a classical analog to the family of quantum
states known to have reversible entanglement. An indispensable tool used in our
analysis is a conditional form of the G\'{a}cs-K\'{o}rner Common Information.
Choo, Y, Mahajan, LH, Gopinadhan, M, Ndaya, D, Deshmukh, P, Kasi, RM & Osuji, CO 2015, 'Phase Behavior of Polylactide-Based Liquid Crystalline Brushlike Block Copolymers', Macromolecules, vol. 48, no. 22, pp. 8315-8322.
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Choudhury, MH, Ciampi, S, Yang, Y, Tavallaie, R, Zhu, Y, Zarei, L, Gonçales, VR & Gooding, JJ 2015, 'Connecting electrodes with light: one wire, many electrodes', Chemical Science, vol. 6, no. 12, pp. 6769-6776.
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The requirement of a wire to each electrode is central to the design of any electronic device but can also be a major restriction. Herein it is shown how electrodes can be connected using light such that a multielectrode device requires only a single physical wire.
Chowdury, A, Kedziora, DJ, Ankiewicz, A & Akhmediev, N 2015, 'Breather solutions of the integrable quintic nonlinear Schrödinger equation and their interactions', Physical Review E, vol. 91, no. 2.
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Chowdury, A, Kedziora, DJ, Ankiewicz, A & Akhmediev, N 2015, 'Breather-to-soliton conversions described by the quintic equation of the nonlinear Schrödinger hierarchy', Physical Review E, vol. 91, no. 3.
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Chrimes, AF, Khodasevych, I, Mitchell, A, Rosengarten, G & Kalantar-zadeh, K 2015, 'Dielectrophoretically controlled Fresnel zone plate', Lab on a Chip, vol. 15, no. 4, pp. 1092-1100.
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We present a novel switchable Fresnel zone plate, created using nanoparticle suspensions which are controlled by dielectrophoresis.
Chuang, C-H, Huang, C-S, Ko, L-W & Lin, C-T 2015, 'An EEG-based perceptual function integration network for application to drowsy driving', Knowledge-Based Systems, vol. 80, pp. 143-152.
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Clement, S, Deng, W, Drozdowicz-Tomsia, K, Liu, D, Zachreson, C & Goldys, EM 2015, 'Bright, water-soluble CeF3 photo-, cathodo-, and X-ray luminescent nanoparticles', Journal of Nanoparticle Research, vol. 17, no. 1.
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Coles, PJ, Berta, M, Tomamichel, M & Wehner, S 2015, 'Entropic Uncertainty Relations and their Applications', Rev. Mod. Phys., vol. 89, no. 1, pp. 015002-58.
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Heisenberg's uncertainty principle forms a fundamental element of quantum
mechanics. Uncertainty relations in terms of entropies were initially proposed
to deal with conceptual shortcomings in the original formulation of the
uncertainty principle and, hence, play an important role in quantum
foundations. More recently, entropic uncertainty relations have emerged as the
central ingredient in the security analysis of almost all quantum cryptographic
protocols, such as quantum key distribution and two-party quantum cryptography.
This review surveys entropic uncertainty relations that capture Heisenberg's
idea that the results of incompatible measurements are impossible to predict,
covering both finite- and infinite-dimensional measurements. These ideas are
then extended to incorporate quantum correlations between the observed object
and its environment, allowing for a variety of recent, more general
formulations of the uncertainty principle. Finally, various applications are
discussed, ranging from entanglement witnessing to wave-particle duality to
quantum cryptography.
Combes, J & Ferrie, C 2015, 'Cost of postselection in decision theory', Physical Review A, vol. 92, no. 2, pp. 1-9.
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© 2015 American Physical Society. Postselection is the process of discarding outcomes from statistical trials that are not the event one desires. Postselection can be useful in many applications where the cost of getting the wrong event is implicitly high. However, unless this cost is specified exactly, one might conclude that discarding all data is optimal. Here we analyze the optimal decision rules and quantum measurements in a decision theoretic setting where a prespecified cost is assigned to discarding data. Our scheme interpolates between unambiguous state discrimination (when the cost of postselection is zero) and a minimum error measurement (when the cost of postselection is maximal). We also relate our formulation to previous approaches which focus on minimizing the probability of indecision.
Cook, AJ, Gargiulo, GD, Lehmann, T & Hamilton, TJ 2015, 'Open platform, eight‐channel, portable bio‐potential and activity data logger for wearable medical device development', Electronics Letters, vol. 51, no. 21, pp. 1641-1643.
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© 2015 The Institution of Engineering and Technology. The design of a wearable, portable and reconfigurable physical activity and an eight-channel bio-potential data logger, capable of increasing compliance by enabling customised feedback (i.e. calories expenditure and amount of physical activity) is presented while recording clinically meaningful information regarding a subject's health. Here an application of the device to the cardio-vascular system comprising simultaneous recording of ECG and activity in both resting and under-stress conditions is presented (clinical trials are performed under the supervision of expert cardiologists at Prince of Wales Hospital NSW, Australia). The designed device (based around the low-power LPC1768 ARM processor and the bio-potential front-end ADS1298) is an open-source one and is provided under the GPL GNU 3.0 collaborative licence.
Cook, K, Canning, J, Leon-Saval, S, Reid, Z, Hossain, MA, Comatti, J-E, Luo, Y & Peng, G-D 2015, 'Air-structured optical fiber drawn from a 3D-printed preform', OPTICS LETTERS, vol. 40, no. 17, pp. 3966-3969.
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Cooper, CS, Mukunthan, A, Safaei, F, Ros, M, Franklin, DR & Abolhasan, M 2015, 'Including general environmental effects in K-factor approximation for rice-distributed VANET channels.', Phys. Commun., vol. 14, pp. 32-44.
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This paper presents a method of approximating the Rician K-factor based on the instantaneous static environment. The strongest signal propagation paths are resolved in order to determine specular and diffuse powers for approximation. The model is experimentally validated in two different urban areas in New South Wales, Australia. Good agreement between the model and experimental data was obtained over short-range communication links, demonstrating the suitability of the model in urban VANETs. The paper concludes with recommendations for methods to account for vehicles in the simulation and incorporating additional phenomena (such as scattering) in the approximation.
Corsetti, S, Miles, REH, McDonald, C, Belotti, Y, Reid, JP, Kiefer, J & McGloin, D 2015, 'Probing the Evaporation Dynamics of Ethanol/Gasoline Biofuel Blends Using Single Droplet Manipulation Techniques', The Journal of Physical Chemistry A, vol. 119, no. 51, pp. 12797-12804.
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Corsetti, S, Zehentbauer, FM, McGloin, D & Kiefer, J 2015, 'Characterization of gasoline/ethanol blends by infrared and excess infrared spectroscopy', Fuel, vol. 141, pp. 136-142.
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Cui, H, Wang, X, Zhou, J, Eberl, S, Feng, D & Fulham, M 2015, 'Improved segmentation accuracy for thoracic PET-CT in patients with NSCLC using a multi-graph model (MGM)', JOURNAL OF NUCLEAR MEDICINE, vol. 56, no. 3, pp. 2527-2527.
Cui, H, Wang, X, Zhou, J, Eberl, S, Yin, Y, Feng, D & Fulham, M 2015, 'Topology polymorphism graph for lung tumor segmentation in PET-CT images', Physics in Medicine and Biology, vol. 60, no. 12, pp. 4893-4914.
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Cui, H, Xu, F & Saha, SC 2015, 'A three-dimensional simulation of transient natural convection in a triangular cavity', International Journal of Heat and Mass Transfer, vol. 85, pp. 1012-1022.
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Cui, SX, Yu, N & Zeng, B 2015, 'Generalized graph states based on Hadamard matrices', Journal of Mathematical Physics, vol. 56, no. 7, pp. 072201-072201.
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Graph states are widely used in quantum information theory, including entanglement theory, quantum error correction, and one-way quantum computing. Graph states have a nice structure related to a certain graph, which is given by either a stabilizer group or an encoding circuit, both can be directly given by the graph. To generalize graph states, whose stabilizer groups are abelian subgroups of the Pauli group, one approach taken is to study non-abelian stabilizers. In this work, we propose to generalize graph states based on the encoding circuit, which is completely determined by the graph and a Hadamard matrix. We study the entanglement structures of these generalized graph states and show that they are all maximally mixed locally. We also explore the relationship between the equivalence of Hadamard matrices and local equivalence of the corresponding generalized graph states. This leads to a natural generalization of the Pauli (X, Z) pairs, which characterizes the local symmetries of these generalized graph states. Our approach is also naturally generalized to construct graph quantum codes which are beyond stabilizer codes.
Cui, Y, Zhang, J, Guo, D & Jin, Z 2015, 'Robust facial landmark localization using classified random ferns and pose-based initialization', Signal Processing, vol. 110, pp. 46-53.
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da Rocha, CG & Kemmer, SL 2015, 'Closure to “Method to Implement Delayed Product Differentiation in Construction of High-Rise Apartment Building Projects” by Cecília Gravina da Rocha and Sergio Luiz Kemmer', Journal of Construction Engineering and Management, vol. 141, no. 2, pp. 07014004-07014004.
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Dadras, M, Shafri, HZM, Ahmad, N, Pradhan, B & Safarpour, S 2015, 'Spatio-temporal analysis of urban growth from remote sensing data in Bandar Abbas city, Iran', The Egyptian Journal of Remote Sensing and Space Science, vol. 18, no. 1, pp. 35-52.
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Dang, HQ, Price, WE & Nghiem, LD 2015, 'Rejection and adsorption behaviour of phytoestrogens by nanofiltration and reverse osmosis membranes', Desalination and Water Treatment, vol. 54, no. 4-5, pp. 890-899.
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Dangniam, N & Ferrie, C 2015, 'Quantum Bochner’s theorem for phase spaces built on projective representations', Journal of Physics A: Mathematical and Theoretical, vol. 48, no. 11, pp. 115305-115305.
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Darwish, A & Chaczko, Z 2015, 'Evaluation of Entropy-based Edge Detector Methods for Human Object', International Journal of Computer Applications, vol. 129, no. 13, pp. 1-5.
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In the field of image processing, edges of an image are important as they characterize boundaries. To reduce the volume of data and refine insignificant information without damaging the structural properties of an image, a process called Image Edge Detection may be performed. Understanding algorithms of edge detection is therefore imperative because it is essential in image processing, particularly in object detection. This paper aimed to recognize this importance to detect human object in particular by conducting an experiment , with emphasis on entropy. Similarly, a comparison of the entropy-based edge detector was done based on the different edge detection techniques such as Prewitt, Robert, Sobel, Canny, and LOG operators. Result show that Canny edge detector exhibits a better performance as compared to the other edge detectors to detect the human object in the image. This is derived from the detectors
DarwishAlzughaibi, A, Ahmed Hakami, H & Chaczko, Z 2015, 'Review of Human Motion Detection based on Background Subtraction Techniques', International Journal of Computer Applications, vol. 122, no. 13, pp. 1-5.
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For the majority of computer vision applications, the ability
to identify and detect objects in motion has become a crucial
necessity. Background subtraction, also referred to as foreground
detection is an innovation used with image processing and
computer vision fields when trying to detect an object in motion
within videos from static cameras. This is done by deducting the
present image from the image in the background or background
module. There has been comprehensive research done in this field
as an effort to precisely obtain the region for the use of further
processing (e.g. object recognition). This paper provides a review
of the human motion detection methods focusing on background
subtraction technique
De Cock, J, Zanca, F, Canning, J, Pauwels, R & Hermans, R 2015, 'A comparative study for image quality and radiation dose of a cone beam computed tomography scanner and a multislice computed tomography scanner for paranasal sinus imaging', European Radiology, vol. 25, no. 7, pp. 1891-1900.
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Dehbokry, S & Chew, EK 2015, 'Developing Business Architecture for SMEs: A Strategic Tool for Capability Orchestration and Managing Dynamisms', Journal of Innovation Management in Small and Medium Enterprise, vol. 2015, pp. 1-9.
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Small and Medium Enterprises (SMEs) are increasingly faced with competitive pressure due to swift and constant change to the dynamic and highly interconnected environment in which they operate. Competing in this dynamic ecosystem, SMEs need a strategic tool for managing co-evolution with the dynamic environment in order to create sustained value. Drawing from the specific SME characteristics operating in a collaborative network ecosystem of firms, this paper elicits the specific strategic management requirements that need to be satisfied by a Business Architecture. Extensive exploratory literature review and semi-structured interviews are used to explicate the underlying drivers of SME’s requirements for business architecture that need to be addressed by the requisite BA practice. The paper finds that, the BA practice must possess the capabilities to guide and assist the SMEs to adapt with the dynamic collaborative ecosystem of firms and sense, leverage and orchestrate the network of resources and ICT capabilities to create sustained value. This paper concludes with some guidelines for developing the business architecture-enabled journey toward creating sustained value within the said dynamic ecosystem.
Dehnavi, A, Aghdam, IN, Pradhan, B & Morshed Varzandeh, MH 2015, 'A new hybrid model using step-wise weight assessment ratio analysis (SWARA) technique and adaptive neuro-fuzzy inference system (ANFIS) for regional landslide hazard assessment in Iran', CATENA, vol. 135, pp. 122-148.
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Deng, L, Guo, W, Ngo, HH, Zuthi, MFR, Zhang, J, Liang, S, Li, J, Wang, J & Zhang, X 2015, 'Membrane fouling reduction and improvement of sludge characteristics by bioflocculant addition in submerged membrane bioreactor', Separation and Purification Technology, vol. 156, pp. 450-458.
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Deng, S, Wang, D, Li, X & Xu, G 2015, 'Exploring user emotion in microblogs for music recommendation', Expert Systems with Applications, vol. 42, no. 23, pp. 9284-9293.
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Deng, W, Farnham, MMJ, Goldys, EM, Mohammed, S & Pilowsky, PM 2015, 'Gene Interference with Morpholinos in a Gold Nanoparticle-Based Delivery Platform in Rat PC12 Cells', Journal of Biomedical Nanotechnology, vol. 11, no. 12, pp. 2111-2123.
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Deng, Z, Cao, L, Jiang, Y & Wang, S 2015, 'Minimax Probability TSK Fuzzy System Classifier: A More Transparent and Highly Interpretable Classification Model', IEEE Transactions on Fuzzy Systems, vol. 23, no. 4, pp. 813-826.
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Di Bartolo, BA, Cartland, SP, Prado‐Lourenco, L, Griffith, TS, Gentile, C, Ravindran, J, Azahri, NSM, Thai, T, Yeung, AWS, Thomas, SR & Kavurma, MM 2015, 'Tumor Necrosis Factor–Related Apoptosis‐Inducing Ligand (TRAIL) Promotes Angiogenesis and Ischemia‐Induced Neovascularization Via NADPH Oxidase 4 (NOX4) and Nitric Oxide–Dependent Mechanisms', Journal of the American Heart Association, vol. 4, no. 11.
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Background
Tumor necrosis factor–related apoptosis‐inducing ligand (
TRAIL
) has the ability to inhibit angiogenesis by inducing endothelial cell death, as well as being able to promote pro‐angiogenic activity in vitro. These seemingly opposite effects make its role in ischemic disease unclear. Using
Trail
−/−
and wildtype mice, we sought to determine the role of
TRAIL
in angiogenesis and neovascularization following hindlimb ischemia.
Methods and Results
Reduced vascularization assessed by real‐time 3‐dimensional Vevo ultrasound imaging and
CD
31 staining was evident in
Trail
−/−
mice after ischemia, and associated with reduced capillary formation and increased apoptosis. Notably, adenoviral
TRAIL
administration significantly improved limb perfusion, capillary density, and vascular smooth‐muscle cell content in both
Trail
−/−
and wildtype mice. Fibroblast growth factor‐2, a potent angiogenic factor, ...
Dibs, H, Mansor, S, Ahmad, N & Pradhan, B 2015, 'Band-to-band registration model for near-equatorial Earth observation satellite images with the use of automatic control point extraction', International Journal of Remote Sensing, vol. 36, no. 8, pp. 2184-2200.
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Ding, C, Guo, YJ, Qin, P-Y & Yang, Y 2015, 'A Compact Microstrip Phase Shifter Employing Reconfigurable Defected Microstrip Structure (RDMS) for Phased Array Antennas', IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. 63, no. 5, pp. 1985-1996.
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A compact phase shifter using reconfigurable defected microstrip structure (RDMS) is proposed for phased array antennas. A complete phase shifter design scheme that serves as an engineering guidance is described. Stepwise phase shifters that have phase-shifting ranges of 90° and 180° with a step size of 45° are designed, fabricated, and tested. The experimental results demonstrate that the size, maximum insertion loss of the phase shifters, and the quantity of the lumped elements are reduced by 80%-90%, 25%-30%, and 50%, respectively, compared to our previous work. Subsequently, a four-element phased array is built employing such RDMS-based phase shifters, realizing a size reduction of 55% in the array size. The measurement results show that the phased array antenna is able to switch its main beam between -15°, 0°, and 15° in the H-plane, with the average realized gain around 10 dBi.
Ding, J, Dutkiewicz, E & Huang, X 2015, 'Joint optimal relay location and power allocation for ultra-wideband-based wireless body area networks', EURASIP Journal on Wireless Communications and Networking, vol. 2015, no. 1.
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Ding, Y, Huang, W, Sheng, D & Sloan, SW 2015, 'Numerical study on finite element implementation of hypoplastic models', Computers and Geotechnics, vol. 68, pp. 78-90.
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Dinh, VA, Giri, PC, Rathinavel, I, Nguyen, E, Hecht, D, Dorotta, I, Nguyen, HB & Chrissian, AA 2015, 'Impact of a 2-Day Critical Care Ultrasound Course during Fellowship Training: A Pilot Study', Critical Care Research and Practice, vol. 2015, pp. 1-8.
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Objectives. Despite the increasing utilization of point-of-care critical care ultrasonography (CCUS), standards establishing competency for its use are lacking. The purpose of this study was to evaluate the effectiveness of a 2-day CCUS course implementation on ultrasound-naïve critical care medicine (CCM) fellows.Methods. Prospective evaluation of the impact of a two-day CCUS course on eight CCM fellows’ attitudes, proficiency, and use of CCUS. Ultrasound competency on multiple organ systems was assessed including abdominal, pulmonary, vascular, and cardiac systems. Subjects served as self-controls and were assessed just prior to, within 1 week after, and 3 months after the course.Results. There was a significant improvement in CCM fellows’ written test scores, image acquisition ability, and pathologic image interpretation 1 week after the course and it was retained 3 months after the course. Fellows also had self-reported increased confidence and usage of CCUS applications after the course.Conclusions. Implementation of a 2-day critical care ultrasound course covering general CCUS and basic critical care echocardiography using a combination of didactics, live models, and ultrasound simulators is effective in improving critical care fellows’ proficiency and confidence with ultrasound use in both the short- and long-term settings.
Diyaljee, V 2015, 'Discussion of “Behavior of Geocell-Reinforced Subballast Subjected to Cyclic Loading in Plane-Strain Condition” by Buddhima Indraratna, M. Mahdi Biabani, and Sanjay Nimbalkar', Journal of Geotechnical and Geoenvironmental Engineering, vol. 141, no. 10, pp. 07015027-07015027.
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Dodd, JM, Ahmed, S, Karnon, J, Umberger, W, Deussen, AR, Tran, T, Grivell, RM, Crowther, CA, Turnbull, D, McPhee, AJ, Wittert, G, Owens, JA & Robinson, JS 2015, 'The cost-effectiveness of providing antenatal lifestyle advice for women who are overweight or obese: the LIMIT randomised trial', BMC Obesity, vol. 2, no. 1.
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Dong, H & Hussain, FK 2015, 'Service-requester-centered service selection and ranking model for digital transportation ecosystems', COMPUTING, vol. 97, no. 1, pp. 79-102.
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Transport services are a fundamental utility that drives human society. A Digital Transportation Ecosystem is a sub-system of the Digital Ecosystem, which uses ICT resources to facilitate transport service transactions. This research focuses on the selection and ranking of online transport service information. The previous research in this area has been unable to achieve satisfactory performance or give sufficient freedom to service requesters to rank services based on their preferences. `User-centered design is a broad term to describe how end-users influence system design. In this research, we propose a Service-Requester-Centered Service Selection and Ranking Model, guided by the philosophy of user-centered design. Three major sub-models are involved in this model: a model for assisting service requesters to search appropriate transport service ontology concepts to denote their service requests, a model for enhancing the accuracy of automatic transport service concept recommendation by observing service requesters click behaviours, and a model for enabling service-requester-preference-based service ranking. Implementations and empirical experiments are conducted to evaluate the three sub-models and the drawn conclusions along with directions for future work are outlined.
Dorrell, DG & Salah, A 2015, 'Detection of Rotor Eccentricity in Wound Rotor Induction Machines Using Pole-Specific Search Coils', IEEE TRANSACTIONS ON MAGNETICS, vol. 51, no. 11.
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© 2015 IEEE. This paper addresses the need to detect the rotor radial position in an electrical machine. When it is not centered, it is referred to as rotor eccentricity. Cage induction machines can use the detection of sideband currents, and this is studied extensively elsewhere. Wound rotor induction machines do not generate the same sidebands, so an alternative detection method is needed. These machines are now popular generators in wind turbines. A simple method using pole-specific search coils is introduced, and a theory is developed to illustrate that rotor eccentricity leads to the generation of air-gap flux waves with pole-pairs that are pm ± 1. This is tested using search coils in a 4-pole wound rotor machine. The method is found to successfully indicate the presence of rotor eccentricity.
Dovey, K & Rembach, M 2015, 'Invisible practices; innovative outcomes: intrapreneurship within the academy', Action Learning: Research and Practice, vol. 12, no. 3, pp. 276-292.
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Across the world, higher education is facing new challenges as governments cut subsidies, new technologies enable ‘massively open’ online courses, students are accessed from global locations, and the centuries-old mission of universities is commercialised. In spite of these profound changes, most institutions of higher education have remained unaltered in terms of how they are structured and governed. Similarly, the consequent commodification of knowledge has not been challenged in general even though the lack of the deep knowledge that underpins competent professional practice is periodically lamented. This paper outlines an experiment in an alternative form of academic programme management; one which is perhaps more appropriate in current times. It describes an initiative at an Australian university where an action-research approach is being used to engage the full spectrum of stakeholders in the governance and execution of the strategic intent of a particular ‘flagship’ postgraduate programme. In this way, it demonstrates how knowing (knowledge manifesting in practice) is achieved through a form of praxis that continuously refines, through interactive ‘creatively abrasive’ forums, the enactment of mission-pertinent practices. However, as an initiative that threatens the political status quo within the university, much of the action, until recently, has had to be conducted ‘invisibly’.
Dragos, J & Wu, C 2015, 'Single-Degree-of-Freedom Approach to Incorporate Axial Load Effects on Pressure Impulse Curves for Steel Columns', Journal of Engineering Mechanics, vol. 141, no. 1, pp. 04014098-04014098.
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Du, J, Wang, J, Zhang, T, Bai, D, Guo, YJ & He, Y 2015, 'Demonstration of a Portable HTS MMIC Microwave Receiver Front-End', IEEE Transactions on Applied Superconductivity, vol. 25, no. 3, pp. 1-4.
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© 2014 IEEE. We report the first demonstration of a portable HTS monolithic microwave integrated circuit (MMIC) receiver front-end module operating on a commercial mini cryocooler. The HTS circuit consists of a step-edge junction mixer and a number of HTS filters fabricated on a single MgO substrate. The HTS MMIC circuit is integrated with the mini cryocooler. The sample vacuum chamber, cold-head, compressor and cooling fans are all packed into one customer-designed portable box of approximately 350 mm × 350 mm × 250 mm in dimension. The HTS Josephson junction-based microwave circuit operated successfully in the cryocooler unshielded without observable performance degradation. The design and implementation of the compact unit and performance evaluation of a HTS MMIC frequency down-converter are presented.
Du, Y, Lu, DD-C, Chu, GML & Xiao, W 2015, 'Closed-Form Solution of Time-Varying Model and Its Applications for Output Current Harmonics in Two-Stage PV Inverter', IEEE Transactions on Sustainable Energy, vol. 6, no. 1, pp. 142-150.
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Duan, N, Xu, W, Wang, S, Zhu, J & Guo, Y 2015, 'A new Preisach type hysteresis model of high temperature superconductors', Journal of Applied Physics, vol. 117, no. 17, pp. 17A718-17A718.
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This paper presents a new Preisach type hysteresis model for the high temperature superconductor. This model requires only the limiting hysteresis loop as the input data, and for this model, the limiting hysteresis loop is first separated into two limiting M−H loops based on the mechanisms, which can then be modeled by two separate modified Preisach algorithms. The area integrations of the Preisach distribution functions are determined only based on the limiting M−H loops. The validity and accuracy of this model is confirmed by comparing the simulation and experiment results of Bi-2223 and YBa2Cu3Ox superconducting tapes with external magnetic fields.
Duan, N, Xu, W, Wang, S, Zhu, J & Guo, Y 2015, 'Hysteresis Modeling of High-Temperature Superconductor Using Simplified Preisach Model', IEEE Transactions on Magnetics, vol. 51, no. 3, pp. 1-4.
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Duan, R, Severini, S & Winter, A 2015, 'On zero-error communication via quantum channels in the presence of noiseless feedback', IEEE Trans. Inf. Theory, vol. 62, no. 9, pp. 9-5277.
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We initiate the study of zero-error communication via quantum channels when
the receiver and sender have at their disposal a noiseless feedback channel of
unlimited quantum capacity, generalizing Shannon's zero-error communication
theory with instantaneous feedback.
We first show that this capacity is a function only of the linear span of
Choi-Kraus operators of the channel, which generalizes the bipartite
equivocation graph of a classical channel, and which we dub 'non-commutative
bipartite graph'. Then we go on to show that the feedback-assisted capacity is
non-zero (with constant activating noiseless communication) if and only if the
non-commutative bipartite graph is non-trivial, and give a number of equivalent
characterizations. This result involves a far-reaching extension of the
'conclusive exclusion' of quantum states [Pusey/Barrett/Rudolph, Nature Phys.
8:475-478].
We then present an upper bound on the feedback-assisted zero-error capacity,
motivated by a conjecture originally made by Shannon and proved later by
Ahlswede. We demonstrate this bound to have many good properties, including
being additive and given by a minimax formula. We also prove that this quantity
is the entanglement-assisted capacity against an adversarially chosen channel
from the set of all channels with the same Choi-Kraus span, which can also be
interpreted as the feedback-assisted unambiguous capacity. The proof relies on
a generalization of the 'Postselection Lemma' [Christandl/Koenig/Renner, PRL
102:020504] that allows to reflect additional constraints, and which we believe
to be of independent interest.
We illustrate our ideas with a number of examples, including
classical-quantum channels and Weyl diagonal channels, and close with an
extensive discussion of open questions.
Duong, HC, Chivas, AR, Nelemans, B, Duke, M, Gray, S, Cath, TY & Nghiem, LD 2015, 'Treatment of RO brine from CSG produced water by spiral-wound air gap membrane distillation — A pilot study', Desalination, vol. 366, pp. 121-129.
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Duong, HC, Cooper, P, Nelemans, B, Cath, TY & Nghiem, LD 2015, 'Optimising thermal efficiency of direct contact membrane distillation by brine recycling for small-scale seawater desalination', Desalination, vol. 374, pp. 1-9.
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Duong, HC, Gray, S, Duke, M, Cath, TY & Nghiem, LD 2015, 'Scaling control during membrane distillation of coal seam gas reverse osmosis brine', Journal of Membrane Science, vol. 493, pp. 673-682.
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Eickelmann, M, Schallow, J, Sousanabady, RJ & Deuse, J 2015, 'Lebenszyklusübergreifende Qualitätsservices', Zeitschrift für wirtschaftlichen Fabrikbetrieb, vol. 110, no. 4, pp. 167-171.
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Kurzfassung
Moderne Informations- und Kommunikationstechnologien ermöglichen die umfassende Speicherung großer Datenmengen, ihre Auswertung wird jedoch oftmals nicht hinreichend fokussiert. Insbesondere für das Qualitätsmanagement ist die effektive Nutzung qualitätsrelevanter Daten zur Entscheidungsunterstützung von höchster Bedeutung. Dieser Beitrag präsentiert einen Ansatz des handhabbaren Datenmanagements sowie der aufwandsarmen Analyse und Prognose qualitätsspezifischer Größen zur Realisierung eines übergreifenden, prädiktiven Qualitätsmanagements.
Eickelmann, M, Wiegand, M, Konrad, B & Deuse, J 2015, 'Die Bedeutung von Data-Mining im Kontext von Industrie 4.0', Zeitschrift für wirtschaftlichen Fabrikbetrieb, vol. 110, no. 11, pp. 738-743.
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Kurzfassung
Moderne Informations- und Kommunikationstechnologien ermöglichen die umfassende Speicherung großer Datenmengen, ihre Auswertung wird jedoch oftmals nicht hinreichend fokussiert. Insbesondere die effektive Nutzung des in den Informationsspeichern vorhandenen Wissens zur prädiktiven Entscheidungs- und Planungsunterstützung ist von höchster Bedeutung. Dieser Beitrag beschreibt am Beispiel drei unterschiedlicher, anwendungsspezifischer Ansätze der Wissensentdeckung die zunehmende Relevanz des Data-Mining im Produktlebenszyklus.
Ekpenyong, UE, Zhang, J & Xia, X 2015, 'How information propagation in social networks can improve energy savings based on time of use tariff', Sustainable Cities and Society, vol. 19, pp. 26-33.
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Elias, J, Paris, S & Krunz, M 2015, 'Cross-Technology Interference Mitigation in Body Area Networks: An Optimization Approach', IEEE Transactions on Vehicular Technology, vol. 64, no. 9, pp. 4144-4157.
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Elson, KM, Fox, N, Tipper, JL, Kirkham, J, Hall, RM, Fisher, J & Ingham, E 2015, 'Non-destructive monitoring of viability in an ex vivo organ culture model of osteochondral tissue', European Cells and Materials, vol. 29, pp. 356-369.
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Evans, J, Henderson, AJ, Sun, J, Haugen, H, Myhrer, T, Maryan, C, Ivanow, KN, Cameron, A & Johnson, NW 2015, 'The value of inter-professional education: a comparative study of dental technology students' perceptions across four countries', British Dental Journal, vol. 218, no. 8, pp. 481-487.
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Fadavi Boostani, A, Tahamtan, S, Jiang, ZY, Wei, D, Yazdani, S, Azari Khosroshahi, R, Taherzadeh Mousavian, R, Xu, J, Zhang, X & Gong, D 2015, 'Enhanced tensile properties of aluminium matrix composites reinforced with graphene encapsulated SiC nanoparticles', Composites Part A: Applied Science and Manufacturing, vol. 68, pp. 155-163.
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Fadavi Boostani, A, Yazdani, S, Taherzadeh Mousavian, R, Tahamtan, S, Azari Khosroshahi, R, Wei, D, Brabazon, D, Xu, JZ, Zhang, XM & Jiang, ZY 2015, 'Strengthening mechanisms of graphene sheets in aluminium matrix nanocomposites', Materials & Design, vol. 88, pp. 983-989.
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Fan, H, Hussain, FK & Hussain, OK 2015, 'Semantic client-side approach for web personalization of SaaS-based cloud services', CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE, vol. 27, no. 8, pp. 2144-2169.
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Fan, H, Hussain, FK, Younas, M & Hussain, OK 2015, 'An integrated personalization framework for SaaS-based cloud services', Future Generation Computer Systems, vol. 53, pp. 157-173.
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© 2015 Elsevier B.V. Software as a Service (SaaS) has recently emerged as one of the most popular service delivery models in cloud computing. The number of SaaS services and their users is continuously increasing and new SaaS service providers emerge on a regular basis. As users are exposed to a wide range of SaaS services, they may soon become more demanding when receiving/consuming such services. Similar to the web and/or mobile applications, personalization can play a critical role in modern SaaS-based cloud services. This paper introduces a fully designed, cloud-enabled personalization framework to facilitate the collection of preferences and the delivery of corresponding SaaS services. The approach we adapt in the design and development of the proposed framework is to synthesize various models and techniques in a novel way. The objective is to provide an integrated and structured environment wherein SaaS services can be provisioned with enhanced personalization quality and performance.
Fan, X & Cao, L 2015, 'A convergence theorem for graph shift-type algorithms', Pattern Recognition, vol. 48, no. 8, pp. 2751-2760.
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© 2015 Elsevier Ltd. All rights reserved. Abstract The Robust Graph mode seeking by Graph Shift (Liu and Yan, 2010) (RGGS) algorithm represents a recent promising approach for discovering dense subgraphs in noisy data. However, there are no theoretical foundations for proving the convergence of the RGGS algorithm, leaving the question as to whether an algorithm works for solid reasons. In this paper, we propose a generic theoretical framework consisting of three key Graph Shift (GS) components: the simplex of a generated sequence set, the monotonic and continuous objective function and closed mapping. We prove that the GS-type algorithms built on such components can be transformed to fit Zangwill's theory, and the sequence set generated by the GS procedures always terminates at a local maximum, or at worst, contains a subsequence which converges to a local maximum of the similarity measure function. The framework is verified by theoretical analysis and experimental results of several typical GS-type algorithms.
Fan, X, Cao, L & Da Xu, RY 2015, 'Dynamic Infinite Mixed-Membership Stochastic Blockmodel', IEEE Transactions on Neural Networks and Learning Systems, vol. 26, no. 9, pp. 2072-2085.
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Fang, J, Gao, Y, Sun, G, Qiu, N & Li, Q 2015, 'On design of multi-cell tubes under axial and oblique impact loads', Thin-Walled Structures, vol. 95, pp. 115-126.
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Fang, J, Gao, Y, Sun, G, Xu, C & Li, Q 2015, 'Multiobjective robust design optimization of fatigue life for a truck cab', Reliability Engineering & System Safety, vol. 135, pp. 1-8.
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Fang, J, Gao, Y, Sun, G, Xu, C, Zhang, Y & Li, Q 2015, 'Optimization of Spot-Welded Joints Combined Artificial Bee Colony Algorithm with Sequential Kriging Optimization', Advances in Mechanical Engineering, vol. 6, no. 0, pp. 573694-573694.
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© 2014 Jianguang Fang et al. Generally, spot-welded joints are the weakest parts of structures leading to fatigue failure under fluctuating loads. Therefore, it is important to optimize the spot weld to improve the fatigue life. However, a classical optimization of the spot weld often directly couples finite element analysis (FEA) with optimization algorithm, which may fall into a local optimum or be expensive computationally. In this study, a metamodel-based optimization procedure is proposed to find the optimum locations of spot-welded joints for maximum fatigue life. Based on the initial training points, Kriging model is implemented to approximate the objective function regarding the design variables (i.e., locations of spot welds). To further overcome the defect of traditional Kriging model and improve the accuracy of optimum results, the sequential Kriging optimization (SKO) is utilized, where the Kriging model is updated iteratively by adding new training points to the training dataset till the global optimum is obtained. The optimization is run using artificial bee colony (ABC) algorithm and the results show that our proposed method is able to improve the performance of the spot-welded joint. More importantly, more competent optimum can be found and the optimization can be executed more efficiently, compared to the conventional methods.
Fang, J, Gao, Y, Sun, G, Zheng, G & Li, Q 2015, 'Dynamic crashing behavior of new extrudable multi-cell tubes with a functionally graded thickness', International Journal of Mechanical Sciences, vol. 103, pp. 63-73.
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Fang, Z, Jiang, Z, Wang, X, Zhou, C, Wei, D & Liu, X 2015, 'Grain size effect of thickness/average grain size on mechanical behaviour, fracture mechanism and constitutive model for phosphor bronze foil', The International Journal of Advanced Manufacturing Technology, vol. 79, no. 9-12, pp. 1905-1914.
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Size effects play a significant role in microforming process, and any dimensional change can have a great impact on materials’ mechanical properties. In this paper, the size effects on deformation behaviour and fracture of phosphor foil were investigated in the form of grain size effect: the ratio of materials’ thickness (T) to average grain size (D) by micro tensile tests. The ratio was designed to be closed to but larger than, less than and equal to 1, respectively. The results show that the amount of plastic deformation decreases with the decrease of the ratio of T/D, which indicates that the grain size plays a significant role and grain deformation modes differ when the ratio changes. It is also found that their fractograph reflects different features in terms of micro-dimples and cleavage planes, further demonstrating that when T/D >1, its materials have a tendency to fracture ductilely, while materials would like to conduct brittle fracture when T/D <1. So the ratio of T/D which is close to 1 can be regarded as the divide of ductile fracture and brittle fracture. For T/D <1, a new constitutive model is proposed based on the classic composite model. The model’s results are compared with the experimental ones and the efficiency of the developed models is verified.
Fang, Z, Jiang, Z, Wei, D & Liu, X 2015, 'Study on springback in micro V-bending with consideration of grain heterogeneity', The International Journal of Advanced Manufacturing Technology, vol. 78, no. 5-8, pp. 1075-1085.
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With the new development of microforming technology, the demand on the accuracy of the metallic microcomponents is elevating. Springback phenomenon is inevitable during sheet metal forming process and can cause unpredicted dimensional error. The previous research found that the springback value in microforming is difficult to be assessed as the sizes of tools and specimens downsize hundreds even thousands times. This paper focuses on improving the prediction accuracy of springback during micro V-bending. A finite element (FE) model of the micro V-bending has been established via ABAQUS/Standard commercial software where the specimen’s microstructure is represented by Voronoi tessellations. With the consideration of the grain heterogeneity, each Voronoi tessellation has been employed with different grain mechanical properties based on experimental results. Corresponding micro V-bending tests have been carried out, and a good agreement between the experimental and simulation results indicates that the developed FE model can accurately predict springback in micro V-bending.
Fariha, A, Ahmed, CF, Leung, CK, Samiullah, M, Pervin, S & Cao, L 2015, 'A new framework for mining frequent interaction patterns from meeting databases', Engineering Applications of Artificial Intelligence, vol. 45, pp. 103-118.
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Fatahi, B & Khabbaz, H 2015, 'Influence of Chemical Stabilisation on Permeability of Municipal Solid Wastes', Geotechnical and Geological Engineering, vol. 33, no. 3, pp. 455-466.
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© 2014, Springer International Publishing Switzerland. There are a number of important challenges in redevelopment of closed landfill sites including high permeation, complexity in settlement behaviour, weak shear strength, gas emission as well as health and safety issues. This paper is a part of a thorough experimental study on chemically stabilised old landfill sites. The decomposed waste materials were collected from Bankstown landfill located in the south-west of Sydney. The samples were prepared by mixing MSW, with a mixture of fly ash–quicklime with a ratio of 3:1 in percentages of 5, 10, 15 and 20 of fly ash by dry weight of the MSW. Permeability of treated and untreated MSW samples has been estimated during consolidation of MSW specimens in an automated triaxial cell. According to the results, increasing the content of fly ash–quicklime in the MSW specimen reduced the coefficient of permeability, the coefficient of consolidation and the permeability change index (Ck). The coefficient of permeability for an untreated specimen was 6.2 × 10−8 m/s and this figure was reduced to 3.2 × 10−8 m/s in specimens mixed with 26 % fly ash–quicklime (under an average confining pressure of 250 kPa). Increasing the effective confining pressure up to the pre-consolidation pressure caused no significant change in the coefficient of permeability. However at higher pressures the reduction was tangible. It is found that the chemical stabilisation effectively reduces the permeability of the MSW layer. This reduction in the coefficient of permeability can be attributed to a reduction in the bleed channels and void spaces due to the conversion of soluble calcium hydroxide to cementitious compounds. It will be beneficial and effective in redevelopment of closed landfill sites incorporating chemical treatments. The outcomes of this study may facilitate the hydraulic properties of chemically treated closed landfill sites.
Fauzi, H, Metselaar, HSC, Mahlia, TMI, Silakhori, M & Ong, HC 2015, 'Thermal characteristic reliability of fatty acid binary mixtures as phase change materials (PCMs) for thermal energy storage applications', Applied Thermal Engineering, vol. 80, pp. 127-131.
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Feng, L, Ong, Y-S, Lim, M-H & Tsang, IW 2015, 'Memetic Search With Interdomain Learning: A Realization Between CVRP and CARP', IEEE Transactions on Evolutionary Computation, vol. 19, no. 5, pp. 644-658.
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Feng, L, Ong, Y-S, Tan, A-H & Tsang, IW 2015, 'Memes as building blocks: a case study on evolutionary optimization + transfer learning for routing problems', Memetic Computing, vol. 7, no. 3, pp. 159-180.
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Feng, Y & Zhang, L 2015, 'A nearly optimal upper bound for the self-stabilization time in Herman’s algorithm', Distributed Computing, vol. 28, no. 4, pp. 233-244.
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Self-stabilization algorithms are very important in designing fault-tolerant distributed systems. In this paper we consider Herman’s self-stabilization algorithm and study its expected termination time. McIver and Morgan have conjectured the optimal upper bound being (Formula presented.), where (Formula presented.) denotes the number of processors. We present an elementary proof showing a bound of (Formula presented.), a sharp improvement compared with the best known bound (Formula presented.). Our proof is inspired by McIver and Morgan’s approach: we find a nearly optimal closed form of the expected stabilization time for any initial configuration, and apply the Lagrange multipliers method to give an upper bound.
Ferrie, C & Blume-Kohout, R 2015, 'Minimax quantum tomography: the ultimate bounds on accuracy', Phys. Rev. Lett., vol. 116, no. 9, p. 090407.
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A minimax estimator has the minimum possible error ('risk') in the worst
case. We construct the first minimax estimators for quantum state tomography
with relative entropy risk. The minimax risk of non-adaptive tomography scales
as $O(1/\sqrt{N})$, in contrast to that of classical probability estimation
which is $O(1/N)$. We trace this deficiency to sampling mismatch: future
observations that determine risk may come from a different sample space than
the past data that determine the estimate. This makes minimax estimators very
biased, and we propose a computationally tractable alternative with similar
behavior in the worst case, but superior accuracy on most states.
Ferrie, C & Combes, J 2015, 'Ferrie and Combes Reply:', Physical Review Letters, vol. 114, no. 11.
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Fitch, R, Sukkarieh, S, Bergerman, M & van Henten, E 2015, '2015 IEEE RAS Summer School on Agricultural Robotics', IEEE ROBOTICS & AUTOMATION MAGAZINE, vol. 22, no. 2, pp. 96-98.
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Fournier-Viger, P, Wu, C-W, Tseng, VS, Cao, L & Nkambou, R 2015, 'Mining Partially-Ordered Sequential Rules Common to Multiple Sequences', IEEE Transactions on Knowledge and Data Engineering, vol. 27, no. 8, pp. 2203-2216.
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Frati, F, Gaspers, S, Gudmundsson, J & Mathieson, L 2015, 'Augmenting Graphs to Minimize the Diameter', Algorithmica, vol. 72, no. 4, pp. 995-1010.
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© 2014, Springer Science+Business Media New York. We study the problem of augmenting a weighted graph by inserting edges of bounded total cost while minimizing the diameter of the augmented graph. Our main result is an FPT $$4$$4-approximation algorithm for the problem.
Friesen, M, Hamed, A, Lee, T & Oliver Theis, D 2015, 'Fooling-sets and rank', European Journal of Combinatorics, vol. 48, pp. 143-153.
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Fu, Q, McKenzie, TG, Tan, S, Nam, E & Qiao, GG 2015, 'Tertiary amine catalyzed photo-induced controlled radical polymerization of methacrylates', Polymer Chemistry, vol. 6, no. 30, pp. 5362-5368.
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A novel tertiary amine catalyst and trithiocarbonate synergistic photo-induced controlled radical polymerization of methacrylates has been realized under mild UV irradiation, yielding polymethacrylates with low molecular weight distributions and excellent end-group fidelity.
Fu, Q, Xu, J, Ladewig, K, Henderson, TMA & Qiao, GG 2015, 'Degradable cross-linked polymer vesicles for the efficient delivery of platinum drugs', Polymer Chemistry, vol. 6, no. 1, pp. 35-43.
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Nontoxic and acid-degradable polymer vesicles were synthesized as drug carriers. In vitro dose–response cytotoxicity studies suggested that the drug-loaded polymer vesicles were more efficient in delivering cis-platin into cancer cells compared to the internalization of the free drug.
Fujioka, T & Nghiem, LD 2015, 'Fouling control of a ceramic microfiltration membrane for direct sewer mining by backwashing with ozonated water', Separation and Purification Technology, vol. 142, pp. 268-273.
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Fujioka, T, Khan, SJ, McDonald, JA & Nghiem, LD 2015, 'Rejection of trace organic chemicals by a hollow fibre cellulose triacetate reverse osmosis membrane', Desalination, vol. 368, pp. 69-75.
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Fujioka, T, Khan, SJ, McDonald, JA & Nghiem, LD 2015, 'Rejection of trace organic chemicals by a nanofiltration membrane: the role of molecular properties and effects of caustic cleaning', Environmental Science: Water Research & Technology, vol. 1, no. 6, pp. 846-854.
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The aim of this study was to provide further insights to the rejection mechanisms of trace organic chemicals (TrOCs) by nanofiltration (NF).
Fujioka, T, Khan, SJ, McDonald, JA & Nghiem, LD 2015, 'Validating the rejection of trace organic chemicals by reverse osmosis membranes using a pilot-scale system', Desalination, vol. 358, pp. 18-26.
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Fujioka, T, Oshima, N, Suzuki, R, Higgins, M, Price, WE, Henderson, RK & Nghiem, LD 2015, 'Effect of heat treatment on fouling resistance and the rejection of small and neutral solutes by reverse osmosis membranes', Water Supply, vol. 15, no. 3, pp. 510-516.
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The effects of heat treatment on membrane fouling resistance and the rejection of small and neutral solutes by reverse osmosis (RO) membranes were elucidated. RO membrane modification by heat treatment reduced fouling and improved boron rejection. However, heat treatment also caused a decrease in the water permeability of RO membranes. Significant improvement on fouling resistance by heat treatment was observed when RO concentrate was used to simulate a feed solution with high fouling propensity. The improved fouling resistance is likely to be due to changes in the hydrophobic interaction between the membrane surface and foulants. Boron rejection by the ESPA2 membrane was enhanced by heat treatment from 26 to 68% (when evaluated at the permeate flux of 20 L/m2 h). Positron annihilation lifetime spectroscopy revealed that heat treatment did not significantly influence the free-volume hole-radius of the membrane active skin layer. The results reported in this study suggested that changes in the other membrane properties such as free-volume fraction and thickness may be the main cause improving boron rejection.
Fujioka, T, Oshima, N, Suzuki, R, Price, WE & Nghiem, LD 2015, 'Probing the internal structure of reverse osmosis membranes by positron annihilation spectroscopy: Gaining more insight into the transport of water and small solutes', Journal of Membrane Science, vol. 486, pp. 106-118.
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Gallego-Ortega, D, Ledger, A, Roden, DL, Law, AMK, Magenau, A, Kikhtyak, Z, Cho, C, Allerdice, SL, Lee, HJ, Valdes-Mora, F, Herrmann, D, Salomon, R, Young, AIJ, Lee, BY, Sergio, CM, Kaplan, W, Piggin, C, Conway, JRW, Rabinovich, B, Millar, EKA, Oakes, SR, Chtanova, T, Swarbrick, A, Naylor, MJ, O’Toole, S, Green, AR, Timpson, P, Gee, JMW, Ellis, IO, Clark, SJ & Ormandy, CJ 2015, 'ELF5 Drives Lung Metastasis in Luminal Breast Cancer through Recruitment of Gr1+ CD11b+ Myeloid-Derived Suppressor Cells', PLOS Biology, vol. 13, no. 12, pp. e1002330-e1002330.
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Galloux, J, Chekli, L, Phuntsho, S, Tijing, LD, Jeong, S, Zhao, YX, Gao, BY, Park, SH & Shon, HK 2015, 'Coagulation performance and floc characteristics of polytitanium tetrachloride and titanium tetrachloride compared with ferric chloride for coal mining wastewater treatment', SEPARATION AND PURIFICATION TECHNOLOGY, vol. 152, pp. 94-100.
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GANDOMI, AH & ALAVI, AH 2015, 'AN INTRODUCTION OF KRILL HERD ALGORITHM FOR ENGINEERING OPTIMIZATION', JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT, vol. 22, no. 3, pp. 302-310.
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A new metaheuristic optimization algorithm, called Krill Herd (KH), has been recently proposed by Gandomi and Alavi (2012). In this study, KH is introduced for solving engineering optimization problems. For more verification, KH is applied to six design problems reported in the literature. Further, the performance of the KH algorithm is compared with that of various algorithms representative of the state-of-the-art in the area. The comparisons show that the results obtained by KH are better than the best solutions obtained by the existing methods.
Gandomi, AH & Roke, DA 2015, 'Assessment of artificial neural network and genetic programming as predictive tools', Advances in Engineering Software, vol. 88, pp. 63-72.
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Gandomi, AH & Yun, GJ 2015, 'Coupled SelfSim and genetic programming for non-linear material constitutive modelling', Inverse Problems in Science and Engineering, vol. 23, no. 7, pp. 1101-1119.
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Gandomi, AH, Faramarzifar, A, Rezaee, PG, Asghari, A & Talatahari, S 2015, 'NEW DESIGN EQUATIONS FOR ELASTIC MODULUS OF CONCRETE USING MULTI EXPRESSION PROGRAMMING', Journal of Civil Engineering and Management, vol. 21, no. 6, pp. 761-774.
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An innovative multi expression programming (MEP) approach is used to derive new predictive equations for tangent elastic modulus of normal strength concrete (NSC) and high strength concrete (HSC). Similar to several building codes, the modulus of elasticity of NSC and HSC is formulated in terms of concrete compressive strength. Furthermore, a generic model is developed for the estimation of the elastic modulus of both NSC and HSC. Comprehensive databases are gathered from the literature to develop the models. For more verification, a parametric analysis is carried out and discussed. The proposed formulas are found to be accurate for the prediction of the elastic modulus of NSC and HSC. The predictions made by the MEP-based models are more accurate than those obtained by the existing models.
Gandomi, AH, Kashani, AR, Mousavi, M & Jalalvandi, M 2015, 'Slope stability analyzing using recent swarm intelligence techniques', International Journal for Numerical and Analytical Methods in Geomechanics, vol. 39, no. 3, pp. 295-309.
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Gandomi, AH, Kashani, AR, Roke, DA & Mousavi, M 2015, 'Optimization of retaining wall design using recent swarm intelligence techniques', Engineering Structures, vol. 103, pp. 72-84.
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Gao, F, Musial, K, Cooper, C & Tsoka, S 2015, 'Link Prediction Methods and Their Accuracy for Different Social Networks and Network Metrics', Scientific Programming, vol. 2015, pp. 1-13.
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Currently, we are experiencing a rapid growth of the number of social-based online systems. The availability of the vast amounts of data gathered in those systems brings new challenges that we face when trying to analyse it. One of the intensively researched topics is theprediction of social connections between users. Although a lot of effort has been made to develop new prediction approaches, the existing methods are not comprehensively analysed. In this paper we investigate the correlation between network metrics and accuracy of different prediction methods. We selected six time-stamped real-world social networks and ten most widely used link prediction methods. The results of the experiments show that the performance of some methods has a strong correlation with certain network metrics. We managed to distinguish “prediction friendly” networks, for which most of the prediction methods give good performance, as well as “prediction unfriendly” networks, for which most of the methods result in high prediction error. Correlation analysis between network metrics and prediction accuracy of prediction methods may form the basis of a metalearning system where based on network characteristics it will be able to recommend the right prediction method for a given network.
Gao, S, Chamberlain, NF & Guo, YJ 2015, 'Guest Editorial Antennas for Satellite Communications', IEEE Transactions on Antennas and Propagation, vol. 63, no. 4, pp. 1186-1190.
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© 1963-2012 IEEE. The objective of this special issue is to bring together the most updated research contributions addressing antennas for satellite communications (both spaceborne and user terminals), and propose new applications, solutions, and challenges for the future.
Gao, T, Wang, XC, Chen, R, Ngo, HH & Guo, W 2015, 'Disability adjusted life year (DALY): A useful tool for quantitative assessment of environmental pollution', Science of The Total Environment, vol. 511, pp. 268-287.
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Gao, X, Jiang, Z, Wei, D & Kosasih, B 2015, 'Effect of thermomechanical treatment on sliding wear of high-Cr cast iron with large plastic deformation', Tribology International, vol. 92, pp. 117-125.
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Garcia, JA & Felix Navarro, K 2015, 'StepKinnection: A Fall Prevention Game Mindfully Designed for the Elderly.', Stud Health Technol Inform, vol. 214, pp. 43-49.
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This paper presents the StepKinnection game, a Kinect-driven stepping game for the elderly that delivers stepping exercises to train specific cognitive and physical abilities associated with falls. This system combines a set of suitable age-related features, meaningful exercise routines and an embedded clinical test for fall risk assessment. The combination of these three aspects makes the game potentially useful in practice as the game is appealing to the elderly cohort, trains one of the most important abilities to prevent falls and at the same time allows for a continuous assessment of health outcomes; characteristics not available in the literature nor in current commercial games.
Gay, V & Leijdekkers, P 2015, 'Bringing Health and Fitness Data Together for Connected Health Care: Mobile Apps as Enablers of Interoperability', JOURNAL OF MEDICAL INTERNET RESEARCH, vol. 17, no. 11.
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Background: A transformation is underway regarding how we deal with our health. Mobile devices make it possible to have continuous access to personal health information. Wearable devices, such as Fitbit and Apple’s smartwatch, can collect data continuously and provide insights into our health and fitness. However, lack of interoperability and the presence of data silos prevent users and health professionals from getting an integrated view of health and fitness data. To provide better health outcomes, a complete picture is needed which combines informal health and fitness data collected by the user together with official health records collected by health professionals. Mobile apps are well positioned to play an important role in the aggregation since they can tap into these official and informal health and data silos.
Objective: The objective of this paper is to demonstrate that a mobile app can be used to aggregate health and fitness data and can enable interoperability. It discusses various technical interoperability challenges encountered while integrating data into one place.
Methods: For 8 years, we have worked with third-party partners, including wearable device manufacturers, electronic health record providers, and app developers, to connect an Android app to their (wearable) devices, back-end servers, and systems.
Results: The result of this research is a health and fitness app called myFitnessCompanion, which enables users to aggregate their data in one place. Over 6000 users use the app worldwide to aggregate their health and fitness data. It demonstrates that mobile apps can be used to enable interoperability. Challenges encountered in the research process included the different wireless protocols and standards used to communicate with wireless devices, the diversity of security and authorization protocols used to be able to exchange data with servers, and lack of standards usage, such as Health Level Seven, for medical information exchange.
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Gefferth, A, Molnár, S & Veitch, D 2015, 'Discrete Self-Similarity'.
Gentile, C, Chuang, CY, Drake, CJ & Davies, MJ 2015, 'Abstract 310: Vascular Endothelial Growth Factor and Endothelial Nitric Oxide Synthase-mediated Regulation of Cardiomyocyte Proliferation During Development in Humans and Mice', Circulation Research, vol. 117, no. suppl_1.
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Our previous studies in early mouse embryonic development (E8.2) showing that vascular endothelial growth factor (VEGF) and endothelial nitric oxide synthase (eNOS) are expressed in embryonic endothelial cells, but not in embryonic cardiomyocytes, together with the findings by others indicating that NO is required for cardiomyocyte proliferation in mice, led us to investigate the relevancy of the VEGF/eNOS signaling pathway during cardiovascular development. First, wild type and NOS3 knockout mouse embryos between E8.0 and E17.0 were stained with antibodies against smooth muscle α-actin, phospho-histone H3 (PH3), VEGFR2 and PECAM, markers of cardiomyocytes, proliferating, progenitor and endothelial cells, respectively. Our confocal analysis showed hearts of E8.0 NOS3 nulls develop normally. However, E8.5 and E9.5 NOS3 nulls have reduced cardiomyocyte proliferation and impaired heart development. As consequence, hearts of E17 NOS3 nulls were approximately 20% smaller compared to wildtype hearts. To translate our findings to humans, we stained human heart specimens with antibodies against VEGFR2, eNOS, PH3 and sarcomeric α-actinin. Confocal analyses showed for the first time that VEGFR2 is highly expressed in the perinuclear region of human cardiomyocytes of a young donor. They also showed a correlation between eNOS expression and cardiomyocyte proliferation in humans. Consequently, we developed an in vitro three-dimensional co-culture model of human endothelial cells, cardiomyocytes and fibroblasts: “human cardiac tissue spheroids” (HCTSs). Our data showed that laminin and collagen type IV synthesis is increased in VEGF-treated HCTSs generated using CMs from an older donor compared to untreated cultures, suggesting a role for VEGF and eNOS in postnatal human heart development. In conclusion, our data showed that VEGF and eNOS play a similar role in mediating cardiomyocytes proliferation and heart regeneration in both mice and humans. Current studies are fo...
Gentile, C, Chuang, CY, Drake, CJ & Davies, MJ 2015, 'The VEGF/eNOS Signaling Pathway Plays a Critical Role in Mouse and Human Cardiomyocyte Proliferation', Free Radical Biology and Medicine, vol. 87, pp. S50-S50.
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George, L, Gargiulo, G, Lehmann, T & Hamilton, T 2015, 'Concept Design for a 1-Lead Wearable/Implantable ECG Front-End: Power Management', Sensors, vol. 15, no. 11, pp. 29297-29315.
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© 2015 by the authors; licensee MDPI, Basel, Switzerland. Power supply quality and stability are critical for wearable and implantable biomedical applications. For this reason we have designed a reconfigurable switched-capacitor DC-DC converter that, aside from having an extremely small footprint (with an active on-chip area of only 0.04 mm2), uses a novel output voltage control method based upon a combination of adaptive gain and discrete frequency scaling control schemes. This novel DC-DC converter achieves a measured output voltage range of 1.0 to 2.2V with power delivery up to 7.5mW with 75% efficiency. In this paper, we present the use of this converter as a power supply for a concept design of a wearable (15mm × 15 mm) 1-lead ECG front-end sensor device that simultaneously harvests power and communicates with external receivers when exposed to a suitable RF field. Due to voltage range limitations of the fabrication process of the current prototype chip, we focus our analysis solely on the power supply of the ECG front-end whose design is also detailed in this paper. Measurement results show not just that the power supplied is regulated, clean and does not infringe upon the ECG bandwidth, but that there is negligible difference between signals acquired using standard linear power-supplies and when the power is regulated by our power management chip.
Ghias, AMYM, Pou, J, Capella, GJ, Agelidis, VG, Aguilera, RP & Meynard, T 2015, 'Single-Carrier Phase-Disposition PWM Implementation for Multilevel Flying Capacitor Converters', IEEE Transactions on Power Electronics, vol. 30, no. 10, pp. 5376-5380.
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Ghobadi, Y, Pradhan, B, Sayyad, GA, Kabiri, K & Falamarzi, Y 2015, 'Simulation of hydrological processes and effects of engineering projects on the Karkheh River Basin and its wetland using SWAT2009', Quaternary International, vol. 374, pp. 144-153.
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Ghobadi, Y, Pradhan, B, Shafri, HZM & Kabiri, K 2015, 'Assessment of spatial relationship between land surface temperature and landuse/cover retrieval from multi-temporal remote sensing data in South Karkheh Sub-basin, Iran', Arabian Journal of Geosciences, vol. 8, no. 1, pp. 525-537.
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Ghobadi, Y, Pradhan, B, Shafri, HZM, bin Ahmad, N & Kabiri, K 2015, 'Spatio-temporal remotely sensed data for analysis of the shrinkage and shifting in the Al Hawizeh wetland', Environmental Monitoring and Assessment, vol. 187, no. 1, p. 4156.
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Ghosh, S & Li, J 2015, 'Using sequential patterns as features for classification models to make accurate predictions on ICU events.', Annu Int Conf IEEE Eng Med Biol Soc, vol. 2015, pp. 8157-8160.
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Pattern mining algorithms have previously been utilized to extract informative rules in various clinical contexts. However, the number of generated patterns are numerous. In most cases, the extracted rules are directly investigated by clinicians for understanding disease diagnoses. The elicitation of important patterns for clinical investigation places a significant demand for precision and interpretability. Hence, it is essential to obtain a set of informative interpretable patterns for building advanced learning models about a patient's physiological condition, specially in critical care units. In this study, a two stage sequential contrast patterns based classification framework is presented, which is used to detect critical patient events like hypotension. In the first stage, we obtain a set of sequential patterns by using a contrast mining algorithm. These sequential patterns undergo post-processing, for conversion to binary valued and frequency based features for developing a classification model, in the second stage. Our results on eight critical care datasets demonstrate better predictive capabilities, when sequential patterns are used as features.
Gill, A, Bunker, D & Seltsikas, P 2015, 'Moving Forward: Emerging Themes in Financial Services Technologies’ Adoption', Communications of the Association for Information Systems, vol. 36, pp. 206-230.
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Financial services technologies (FST) are core to the continuous transformation of financial services organizations (FSO). To date, however, there has been a lack of empirical research into FST adoption against the backdrop of the recent financial crisis. In this paper, we re-examine how FSO are currently positioned to take advantage of emerging FST. Note that, in this paper, we look forward rather than provide a commentary on the state of the art in technology adoption research. We conducted this research by applying an exploratory qualitative study method: we analyzed interview transcripts from thirty recent interviews of FSO technology executives and CIOs by using a thematic network analysis tool. This analysis uncovered nineteen basic, eight organizing, and two global FST adoption research themes along with their links to FST adoption objectives, challenges, customer centricity, human resources, outsourcing, and overall IT strategy maintenance. This research has both practical and theoretical research implications and serves as a resource base for FSO and researchers to set future research priorities and directions. We intend for the emerging themes that we present in this paper to facilitate research directions by shedding light on the areas of greatest value and potential return in FST adoption.
Gill, AQ 2015, 'Agile enterprise architecture modelling: Evaluating the applicability and integration of six modelling standards.', Inf. Softw. Technol., vol. 67, pp. 196-206.
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Gill, AQ & Qureshi, MA 2015, 'Adaptive Enterprise Architecture Modelling.', J. Softw., vol. 10, no. 5, pp. 628-638.
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Agile or adaptive enterprise architecture driven software development approach requires a modelling standard to describe the existing and to-be developed artifacts both at the high enterprise level and low, detailed level. However, a single modelling standard may not be used off-the-shelf to fully support the modelling needs of an adaptive enterprise architecture driven software development needs. The modelling standards need to be systematically analyzed and integrated for a particular modelling context. This paper reviews two well-known modeling standards ArchiMate and BPMN by using the interoperability research framework. Based on the syntax, semantics and structural analysis of these two modelling standards’ metamodels, it proposes a hybrid adaptive enterprise architecture modelling approach for describing and analysing the artifacts both at the high enterprise level and low, detailed level for a particular context. This paper has both theoretical and practical implications for researchers and practitioners pursuing to integrate various modelling standards.
Gill, AQ, Alam, SL & Eustace, J 2015, 'Social Architecture: An Emergency Management Case Study.', Australas. J. Inf. Syst., vol. 19, pp. 23-40.
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Emergency management agencies are progressively using social media for the sourcing and distribution of disaster information. Emergency management agencies are often unsure as to how to best identify and assess social media concerns (e.g. information security, trust) which must be addressed to develop a social media-enabled disaster information management environment. This paper adopts the Social Architecture Viewpoint Assessment (SAVA) framework for identifying and assessing social media concerns from four different viewpoints: IT, Value, Resource and Management. This paper demonstrates the use of the SAVA framework in the context of an in-depth empirical case study of an Australian emergency management agency. The results of this study indicate that the SAVA framework is useful for emergency information management managers in identifying and assessing social media concerns.
Gilmore, R 2015, 'The world’s fastest wireless backhaul radio', Australian Journal of Telecommunications and the Digital Economy, vol. 3, no. 1, pp. 1-1.
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Fibre is commonly perceived to be the dominant transport mechanism for transferring data from access points back to a central office, where it is aggregated onto the core network. However, high speed and long range wireless backhaul remains a cost-effective alternative to fibre networks. In some areas, wireless backhaul is dominant and becoming more and more attractive. However, commercially available wireless backhaul systems do not meet the requirements for both high speed and long range at the same time with sufficiently low latency for some applications. Traditional microwave systems can achieve long transmission range, but the data rates are then limited to a few hundred megabits per second. Multi-gigabit per second wireless communications can be achieved using millimetre-wave (mm-wave) frequency bands, especially in E-band, but the practical transmission range has then always been a major weakness.In this article, the world’s first 5Gbps radio solution – and the fastest commercial backhaul product – developed by EM Solutions Pty Ltd with the Commonwealth Scientific and Industrial Research Organisation (CSIRO) – is described. As well as achieving a state-of-the-art data rate, other key design features include maximal path length, minimal latency, and constant antenna pointing under wind and tower vibration.
Ginger, J, Henderson, D, Humphreys, M, Konthesingha, C & Stewart, MG 2015, 'Wind Loads on the Frames of Industrial Buildings', Australian Journal of Structural Engineering, vol. 16, no. 2, pp. 169-178.
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Ginger, J, Henderson, D, Humphreys, M, Konthesinghe, C & Stewart, MG 2015, 'Wind loads on the frames of industrial buildings', Australian Journal of Structural Engineering, vol. 16, no. 2, pp. 169-177.
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The structural response of typical, gable-end, low roof pitch industrial buildings, in a windstorm is dependent on the wind loads used in the design of cladding and the portal frame structure. Critical, structural wind load effects derived from wind loads measured on a wind tunnel model show that standards such as AS/NZS 1170.2 can produce unconservative design load effects on the heavily loaded fi rst internal frame. This paper forms part of wider study that assesses the vulnerability of hot rolled steel, industrial buildings to wind loads. The knee and ridge bending moments and horizontal and vertical reactions at the base of the frame are the critical load effects that are used in the design of structural members and connections of these types of buildings. This study found that some of these load effects based on external pressures are under-estimated by about 30%, when the building is located in a suburban environment. A dominant windward wall opening can effectively double the design load effects, thus signifi cantly increasing the vulnerability, especially if this scenario has not been considered by the designer.
Gmel, GE, Hamilton, TJ, Obradovic, M, Gorman, RB, Single, PS, Chenery, HJ, Coyne, T, Silburn, PA & Parker, JL 2015, 'A new biomarker for subthalamic deep brain stimulation for patients with advanced Parkinson’s disease—a pilot study', Journal of Neural Engineering, vol. 12, no. 6, pp. 066013-066013.
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© 2015 IOP Publishing Ltd. Objective. Deep brain stimulation (DBS) has become the standard treatment for advanced stages of Parkinson's disease (PD) and other motor disorders. Although the surgical procedure has improved in accuracy over the years thanks to imaging and microelectrode recordings, the underlying principles that render DBS effective are still debated today. The aim of this paper is to present initial findings around a new biomarker that is capable of assessing the efficacy of DBS treatment for PD which could be used both as a research tool, as well as in the context of a closed-loop stimulator. Approach. We have used a novel multi-channel stimulator and recording device capable of measuring the response of nervous tissue to stimulation very close to the stimulus site with minimal latency, rejecting most of the stimulus artefact usually found with commercial devices. We have recorded and analyzed the responses obtained intraoperatively in two patients undergoing DBS surgery in the subthalamic nucleus (STN) for advanced PD. Main results. We have identified a biomarker in the responses of the STN to DBS. The responses can be analyzed in two parts, an initial evoked compound action potential arising directly after the stimulus onset, and late responses (LRs), taking the form of positive peaks, that follow the initial response. We have observed a morphological change in the LRs coinciding with a decrease in the rigidity of the patients. Significance. These initial results could lead to a better characterization of the DBS therapy, and the design of adaptive DBS algorithms that could significantly improve existing therapies and help us gain insights into the functioning of the basal ganglia and DBS.
Golembiewski, B, Sick, N & Broering, S 2015, 'Potential convergence processes within the emerging bioeconomyPotential convergence processes within the emerging bioeconomy – agriculture and energy industry in the focus', International Journal of Innovation and Technology Management, vol. 12, no. 3, pp. 1550012-1-1550012-22.
Golembiewski, B, Sick, N & Bröring, S 2015, 'Patterns of Convergence Within the Emerging Bioeconomy — The Case of the Agricultural and Energy Sector', International Journal of Innovation and Technology Management, vol. 12, no. 03, pp. 1550012-1550012.
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In light of an emerging bioeconomy, fading boundaries between the so far distinct agricultural and energy sector indicate a convergence process leading to a new competitive setting between established value chains requiring dynamic capabilities of the affected firms. On the basis of understanding convergence as a process within research-intensive industries, patent analyses can be applied to identify whether there are trends of convergence associated with the emerging bioeconomy. This study focuses on examining the nexus of agricultural and energy sector with regard to German biogas technologies. Although different disciplinary activities within the field of biogas can be confirmed, for now, biogas (as well as other bioenergy) applications rather seem to build a sub-segment within the energy value chain than to form a new inter-industry segment.
Golembiewski, B, Sick, N & Bröring, S 2015, 'The emerging research landscape on bioeconomy: What has been done so far and what is essential from a technology and innovation management perspective?', Innovative Food Science & Emerging Technologies, vol. 29, pp. 308-317.
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© 2015 Elsevier Ltd. As the global resource base is in need to move from fossil towards bio-based raw materials, different supply chains as well as existing technology platforms become increasingly interconnected. The therefore needed creation and exchange of new knowledge across scientific disciplines require R&D and target technology development and innovation, linking the knowledge-based bioeconomy to technology and innovation management research. In order to get an overview of the current research landscape dealing with the bioeconomy, a publication analysis is conducted. As the number of empirical studies, particularly in management research, is low, our study reveals that the evolution of the bioeconomy is still on a strategic level. Existing studies focus on knowledge networks, open innovation and technologies applicable across value chains to enable a holistic view on organizing future resource allocation and biomass flows. Scientific research in several dimensions is needed to elaborate the bioeconomy concept to make its implementation manageable. Industrial relevance Value chains, particularly of the agri-food, industrial products and energy sector, will increasingly converge due to the shift to bio-based raw materials leading to a mutual dependence and triggering new material flows and food processing technologies. This paper suggests that essential innovation management related research frames might contribute to a sustainable evolution of the bioeconomy by addressing the major challenges.
Golembiewski, B, vom Stein, N, Sick, N & Wiemhöfer, H-D 2015, 'Identifying trends in battery technologies with regard to electric mobility: evidence from patenting activities along and across the battery value chain', Journal of Cleaner Production, vol. 87, no. C, pp. 800-810.
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© 2014 Elsevier Ltd. All rights reserved. Electric mobility is a topic of intense discussions in academia and industry since the stability of future energy supply as well as the associated environmental consequences are uncertain. Therefore, it is necessary to evaluate the research and development status of battery technologies for electric vehicles which are reflecting the interface of the automotive, chemical and electronics sector. The present study applies patent families as technological indicators in order to analyze the research activities of each step of the designed battery value chain individually and in comparison with each other to identify and discuss trends regarding the technologies associated to electric vehicles. By applying this explorative approach to the comparably new field, the study contributes to both the scientific literature on patent analysis as well as on emerging industry and value creation structures related to the electric mobility sector. Although the distribution of patents shows an emphasis on active components, the high number of patents covering more than one value chain step points towards the tendency of considering the whole value chain in systemic research approaches. Furthermore, a detailed analysis of patent assignees reveals insights on the knowledge dissemination across the value chain whereby the major share of industry actors still appears to be focused on their respective core competences but also administers important links to other value chain steps. The increase of collaborative activities across steps further hints towards starting shifts in value creation activities.
Golsorkhi, MS & Lu, DDC 2015, 'A Control Method for Inverter-Based Islanded Microgrids Based on V-I Droop Characteristics', IEEE Transactions on Power Delivery, vol. 30, no. 3, pp. 1196-1204.
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Goodswen, SJ, Barratt, JLN, Kennedy, PJ & Ellis, JT 2015, 'Improving the gene structure annotation of the apicomplexan parasite Neospora caninum fulfils a vital requirement towards an in silico-derived vaccine', INTERNATIONAL JOURNAL FOR PARASITOLOGY, vol. 45, no. 5, pp. 305-318.
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Neospora caninum is an apicomplexan parasite which can cause abortion in cattle, instigating major economic burden. Vaccination has been proposed as the most cost-effective control measure to alleviate this burden. Consequently the overriding aspiration for N. caninum research is the identification and subsequent evaluation of vaccine candidates in animal models. To save time, cost and effort, it is now feasible to use an in silico approach for vaccine candidate prediction. Precise protein sequences, derived from the correct open reading frame, are paramount and arguably the most important factor determining the success or failure of this approach. The challenge is that publicly available N. caninum sequences are mostly derived from gene predictions. Annotated inaccuracies can lead to erroneously predicted vaccine candidates by bioinformatics programs. This study evaluates the current N. caninum annotation for potential inaccuracies. Comparisons with annotation from a closely related pathogen, Toxoplasma gondii, are also made to distinguish patterns of inconsistency. More importantly, a mRNA sequencing (RNA-Seq) experiment is used to validate the annotation. Potential discrepancies originating from a questionable start codon context and exon boundaries were identified in 1943 protein coding sequences. We conclude, where experimental data were available, that the majority of N. caninum gene sequences were reliably predicted. Nevertheless, almost 28% of genes were identified as questionable. Given the limitations of RNA-Seq, the intention of this study was not to replace the existing annotation but to support or oppose particular aspects of it. Ideally, many studies aimed at improving the annotation are required to build a consensus. We believe this study, in providing a new resource on gene structure and annotation, is a worthy contributor to this endeavour.
Granade, C, Ferrie, C & Cory, DG 2015, 'Accelerated randomized benchmarking', New Journal of Physics, vol. 17, no. 1, pp. 013042-013042.
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Grant, M & Stewart, MG 2015, 'Probabilistic Risk Assessment for Improvised Explosive Device Attacks That Cause Significant Building Damage', Journal of Performance of Constructed Facilities, vol. 29, no. 5.
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Most vulnerability assessments assume that an improvised explosive device (IED) will reach maximum TNT equivalency, and that the IED will successfully detonate. These assumptions will tend to overestimate actual blast-load effects. The paper develops an IED probabilistic risk-assessment model using a systems model for IED attacks based on the reliability of IEDs and by characterizing the human aspects of an IED attack's operational effectiveness from existing databases of terrorist incidents. The analysis includes estimates of the probability of threat, hazard, and loss for large commercial buildings in the United States. It was found that annual fatality risk for building occupants is similar to acceptable risk criteria. This suggests that strengthening buildings against progressive collapse may not be warranted unless there is a specific threat against a building.
Gross, JA, Dangniam, N, Ferrie, C & Caves, CM 2015, 'Novelty, efficacy, and significance of weak measurements for quantum tomography', Physical Review A, vol. 92, no. 6.
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Guan, D-F, Ding, C, Qian, Z-P, Zhang, Y-S, Cao, W-Q & Dutkiewicz, E 2015, 'An SIW-Based Large-Scale Corporate-Feed Array Antenna', IEEE Transactions on Antennas and Propagation, vol. 63, no. 7, pp. 2969-2976.
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Gulzar, M, Masjuki, HH, Kalam, MA, Varman, M & Rizwanul Fattah, IM 2015, 'Oil filter modification for biodiesel–fueled engine: A pathway to lubricant sustainability and exhaust emissions reduction', Energy Conversion and Management, vol. 91, pp. 168-175.
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Gulzar, M, Masjuki, HH, Varman, M, Kalam, MA, Mufti, RA, Zulkifli, NWM, Yunus, R & Zahid, R 2015, 'Improving the AW/EP ability of chemically modified palm oil by adding CuO and MoS2 nanoparticles', Tribology International, vol. 88, pp. 271-279.
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Guo, J, Peng, Y, Ni, B-J, Han, X, Fan, L & Yuan, Z 2015, 'Dissecting microbial community structure and methane-producing pathways of a full-scale anaerobic reactor digesting activated sludge from wastewater treatment by metagenomic sequencing', Microbial Cell Factories, vol. 14, no. 1.
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Guo, J, Yang, T, Yuan, J & Zhang, JA 2015, 'Linear Vector Physical-Layer Network Coding for MIMO Two-Way Relay Channels: Design and Performance Analysis', IEEE Transactions on Communications, vol. 63, no. 7, pp. 2591-2604.
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In this paper, we propose a new linear vector physical-layer network coding (NC) scheme for spatial multiplexing multiple-input multiple-output (MIMO) two-way relay channel (TWRC) where the channel state information (CSI) is not available at the transmitters. In this scheme, each user transmits M independent quadrature amplitude modulation signal streams respectively from its M antennas to the relay. Based on the receiver-side CSI, the relay determines a NC generator matrix for linear vector network coding, and reconstructs the associated M linear combinations of all messages. We present an explicit solution for the generator matrix that minimizes the error probability at a high SNR, as well as an efficient algorithm to find the optimized solution. We propose a novel typical error event analysis that exploits a new characterization of the deep fade events for the TWRC. We derive a new closed-form expression for the average error probability of the proposed scheme over a Rayleigh fading MIMO TWRC. Our analysis shows that the proposed scheme achieves the optimal error rate performance at a high SNR. Numerical results show that the proposed scheme significantly outperforms existing schemes, and match well with our analytical results.
Guo, S, Qu, F, Ding, A, Bai, L, Li, G, Ngo, HH, Guo, W & Liang, H 2015, 'Effects of poly aluminum chloride dosing positions on the performance of a pilot scale anoxic/oxic-membrane bioreactor (A/O-MBR)', Water Science and Technology, vol. 72, no. 5, pp. 689-695.
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The effects of poly aluminum chloride (PACl) dosing positions on the performance of a pilot scale anoxic/oxic membrane bioreactor were investigated. PACl dosage was optimized at 19.5 mg Al2O3/L by jar test. Nutrients removal efficiencies and sludge properties were systematically investigated during periods with no PACl dosing (phase I), with PACl dosing in oxic tank (phase II) and then in anoxic tank (phase III). The results showed that total phosphorus removal efficiency increased from 18 to 88% in phase II and 85% in phase III with less than 0.5 mg P/L in effluent. Ammonia nitrogen removal efficiencies reached 99% in all phases and chemical oxygen demand removal efficiencies reached 92%, 91% and 90% in the three phases, respectively. Total nitrogen removal efficiency decreased from 59% in phase I to 49% in phases II and III. Dosing PACl in the oxic tank resulted in smaller sludge particle size, higher zeta potential, better sludge settleability and lower membrane fouling rate in comparison with dosing PACl in the anoxic tank.
Guo, Y, Naik, GR, Huang, S, Abraham, A & Nguyen, HT 2015, 'Nonlinear multiscale Maximal Lyapunov Exponent for accurate myoelectric signal classification', Applied Soft Computing, vol. 36, pp. 633-640.
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Guo, Z, Wang, J & Yan, Z 2015, 'Global Exponential Synchronization of Two Memristor-Based Recurrent Neural Networks With Time Delays via Static or Dynamic Coupling', IEEE Transactions on Systems, Man, and Cybernetics: Systems, vol. 45, no. 2, pp. 235-249.
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Gupta, B, Notarianni, M, Mishra, N, Shafiei, M, Iacopi, F & Motta, N 2015, 'Corrigendum to “Evolution of epitaxial graphene layers on 3C SiC/Si (1 1 1) as a function of annealing temperature in UHV” [Carbon 68 (2014) 563–572]', Carbon, vol. 84, pp. 280-280.
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Gupta, B, Placidi, E, Hogan, C, Mishra, N, Iacopi, F & Motta, N 2015, 'The transition from 3C SiC(111) to graphene captured by Ultra High Vacuum Scanning Tunneling Microscopy', Carbon, vol. 91, pp. 378-385.
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Ha, DT, Dang, TQ, Tran, NV, Vo, NY, Nguyen, ND & Nguyen, TV 2015, 'Prognostic performance of the Rapid Emergency Medicine Score (REMS) and Worthing Physiological Scoring system (WPS) in emergency department', International Journal of Emergency Medicine, vol. 8, no. 1.
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Ha, Q, Royel, S, Li, J & Li, Y 2015, 'Hysteresis Modeling of Smart Structure MR Devices using Describing Functions', IEEE/ASME Transactions on Mechatronics, vol. 21, no. 1, pp. 1-1.
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Magneto-rheological (MR) devices have been quite promising for semi-active control thanks to their capability of adjusting structural parameters, under a low-power control signal, to effectively withstand severe dynamic loadings including seismic events. MR devices, using visco-elastic and ferromagnetic materials, are subject to hysteresis, which may degrade the performance of smart structures. Therefore, this multi-valued nonlinearity needs to be properly modelled and characterized for control and health monitoring. As engineering structures operate as low-pass filter in normal conditions, it is suitable to use the classical describing function (DF) method for modelling and analysis of the hysteretic behaviors in MR device-based smart structures. Data obtained from characterizing tests are recorded in look-up tables to obtain the DFs for these devices, using a curve-fitting technique. The proposed DFs are then useful in structural frequency analysis. Experimental results are reported for a steel beam with MR pin joints subject to quake-induced vibrations provided by a shake table.
Ha, QP & Vakiloroaya, V 2015, 'Modeling and optimal control of an energy-efficient hybrid solar air conditioning system', AUTOMATION IN CONSTRUCTION, vol. 49, no. Part B, pp. 262-270.
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The paper addresses the modeling and optimal control problem of a new hybrid solar-assisted air conditioning system developed for performance enhancement and energy efficiency improvement. To regulate the mass flow rate of the refrigerant vapor passing through a water storage tank for increasing the refrigerant's sub-cooling process at partial loads, we propose a new discharge bypass line together with an inline solenoid valve, installed after the compressor. In addition, to control the air flow rate, a variable speed drive is coupled with the condenser fan. For the control purpose, a lumped parameter model is first developed to describe the system dynamics in an explicit input–output relationship; then, a linear optimal control scheme is applied for the system's multivariable control. The system has been fully-instrumented to examine its performance under different operation conditions. The system model is then validated by extensive experimental tests. Based on the obtained dynamic model, an optimal controller is designed to minimize a quadratic cost function. Numerical algorithms, implemented in a simulation tool, are then employed to predict the energy performance of the system under transient loads. The experimental results obtained from implementation with PLC demonstrate that the newly-developed system can deliver higher system efficiency owing to amelioration of the refrigeration effect in the direct expansion evaporator and adjustment of its air flow rate. The development is thus promising for improvement of energy efficiency, enhancement of the system performance while fulfilling the cooling demand.
Haah, J, Harrow, AW, Ji, Z, Wu, X & Yu, N 2015, 'Sample-optimal tomography of quantum states', IEEE Transactions on Information Theory, vol. 63, no. 9, pp. 5628-5641.
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It is a fundamental problem to decide how many copies of an unknown mixed
quantum state are necessary and sufficient to determine the state. Previously,
it was known only that estimating states to error $\epsilon$ in trace distance
required $O(dr^2/\epsilon^2)$ copies for a $d$-dimensional density matrix of
rank $r$. Here, we give a theoretical measurement scheme (POVM) that requires
$O (dr/ \delta ) \ln (d/\delta) $ copies of $\rho$ to error $\delta$ in
infidelity, and a matching lower bound up to logarithmic factors. This implies
$O( (dr / \epsilon^2) \ln (d/\epsilon) )$ copies suffice to achieve error
$\epsilon$ in trace distance. We also prove that for independent (product)
measurements, $\Omega(dr^2/\delta^2) / \ln(1/\delta)$ copies are necessary in
order to achieve error $\delta$ in infidelity. For fixed $d$, our measurement
can be implemented on a quantum computer in time polynomial in $n$.
Habibullah, M & Lu, DD-C 2015, 'A Speed-Sensorless FS-PTC of Induction Motors Using Extended Kalman Filters', IEEE Transactions on Industrial Electronics, vol. 62, no. 11, pp. 6765-6778.
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Habibullah, M, Masjuki, HH, Kalam, MA, Gulzar, M, Arslan, A & Zahid, R 2015, 'Tribological Characteristics ofCalophyllum inophyllum–Based TMP (Trimethylolpropane) Ester as Energy-Saving and Biodegradable Lubricant', Tribology Transactions, vol. 58, no. 6, pp. 1002-1011.
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Habibullah, M, Masjuki, HH, Kalam, MA, Rahman, SMA, Mofijur, M, Mobarak, HM & Ashraful, AM 2015, 'Potential of biodiesel as a renewable energy source in Bangladesh', Renewable and Sustainable Energy Reviews, vol. 50, pp. 819-834.
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Habibullah, M, Masjuki, HH, Kalam, MA, Zulkifli, NWM, Masum, BM, Arslan, A & Gulzar, M 2015, 'Friction and wear characteristics of Calophyllum inophyllum biodiesel', Industrial Crops and Products, vol. 76, pp. 188-197.
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Habibullah, M, Rizwanul Fattah, IM, Masjuki, HH & Kalam, MA 2015, 'Effects of Palm–Coconut Biodiesel Blends on the Performance and Emission of a Single-Cylinder Diesel Engine', Energy & Fuels, vol. 29, no. 2, pp. 734-743.
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Hamdan, M, Sharif, AO, Derwish, G, Al-Aibi, S & Altaee, A 2015, 'Draw solutions for Forward Osmosis process: Osmotic pressure of binary and ternary aqueous solutions of magnesium chloride, sodium chloride, sucrose and maltose', Journal of Food Engineering, vol. 155, pp. 10-15.
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Han, C, Li, Z, Lu, GQM & Xue Dou, S 2015, 'Robust scalable synthesis of surfactant-free thermoelectric metal chalcogenide nanostructures', Nano Energy, vol. 15, pp. 193-204.
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Han, J, Lu, J, Hu, Y & Zhang, G 2015, 'Tri-level decision-making with multiple followers: Model, algorithm and case study', INFORMATION SCIENCES, vol. 311, pp. 182-204.
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Han, Y, Yang, Y & Wang, J 2015, 'Guest Editorial: Ad Hoc Web Multimedia Analysis with Limited Supervision', Multimedia Tools and Applications, vol. 74, no. 2, pp. 463-465.
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Han, Y, Yang, Y, Wu, F & Hong, R 2015, 'Compact and Discriminative Descriptor Inference Using Multi-Cues', IEEE Transactions on Image Processing, vol. 24, no. 12, pp. 5114-5126.
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Handojoseno, AMA, Shine, JM, Nguyen, TN, Tran, Y, Lewis, SJG & Nguyen, HT 2015, 'Analysis and Prediction of the Freezing of Gait Using EEG Brain Dynamics', IEEE Transactions on Neural Systems and Rehabilitation Engineering, vol. 23, no. 5, pp. 887-896.
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Freezing of Gait (FOG) is a common symptom in the advanced stages of Parkinson's disease (PD), which significantly affects patients' quality of life. Treatment options offer limited benefit and there are currently no mechanisms able to effectively detect FOG before it occurs, allowing time for a sufferer to avert a freezing episode. Electroencephalography (EEG) offers a novel technique that may be able to address this problem. In this paper, we investigated the univariate and multivariate EEG features determined by both Fourier and wavelet analysis in the confirmation and prediction of FOG. The EEG power measures and network properties from 16 patients with PD and FOG were extracted and analyzed. It was found that both power spectral density and wavelet energy could potentially act as biomarkers during FOG. Information in the frequency domain of the EEG was found to provide better discrimination of EEG signals during transition to freezing than information coded in the time domain. The performance of the FOG prediction systems improved when the information from both domains was used. This combination resulted in a sensitivity of 86.0%, specificity of 74.4%, and accuracy of 80.2% when predicting episodes of freezing, outperforming current accelerometry-based tools for the prediction of FOG.
Hao, L, Jiang, Z, Cheng, X, Zhao, J, Wei, D, Jiang, L, Luo, S, Luo, M & Ma, L 2015, 'Effect of Extreme Pressure Additives on the Deformation Behavior of Oxide Scale during the Hot Rolling of Ferritic Stainless Steel Strips', Tribology Transactions, vol. 58, no. 5, pp. 947-954.
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Hao, L, Jiang, Z, Wei, D, Zhao, Y, Zhao, J, Luo, M, Ma, L, Luo, S & Jiang, L 2015, 'Effect of extreme pressure agents on the anti-scratch behaviour of high-speed steel material', Tribology International, vol. 81, pp. 19-28.
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Harte, AM & Crews, K 2015, 'Special issue: Reinforcement of timber structures', Construction and Building Materials, vol. 97, pp. 1-1.
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Hasan, MM, Zhou, Y, Lu, X, Li, J, Song, J & Zhang, Z 2015, 'Computational Identification of Protein Pupylation Sites by Using Profile-Based Composition of k-Spaced Amino Acid Pairs', PLOS ONE, vol. 10, no. 6, pp. e0129635-e0129635.
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Prokaryotic proteins are regulated by pupylation, a type of post-translational modification that contributes to cellular function in bacterial organisms. In pupylation process, the prokaryotic ubiquitin-like protein (Pup) tagging is functionally analogous to ubiquitination in order to tag target proteins for proteasomal degradation. To date, several experimental methods have been developed to identify pupylated proteins and their pupylation sites, but these experimental methods are generally laborious and costly. Therefore, computational methods that can accurately predict potential pupylation sites based on protein sequence information are highly desirable. In this paper, a novel predictor termed as pbPUP has been developed for accurate prediction of pupylation sites. In particular, a sophisticated sequence encoding scheme [i.e. the profile-based composition of k-spaced amino acid pairs (pbCKSAAP)] is used to represent the sequence patterns and evolutionary information of the sequence fragments surrounding pupylation sites. Then, a Support Vector Machine (SVM) classifier is trained using the pbCKSAAP encoding scheme. The final pbPUP predictor achieves an AUC value of 0.849 in 10-fold cross-validation tests and outperforms other existing predictors on a comprehensive independent test dataset. The proposed method is anticipated to be a helpful computational resource for the prediction of pupylation sites. The web server and curated datasets in this study are freely available at http://protein.cau.edu.cn/pbPUP/.
Hasselmann, K, Cremades, R, Filatova, T, Hewitt, R, Jaeger, C, Kovalevsky, D, Voinov, A & Winder, N 2015, 'Free-riders to forerunners', Nature Geoscience, vol. 8, no. 12, pp. 895-898.
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Hayes, G, Khazaei, H, El-Khatib, K, McGregor, C & Eklund, JM 2015, 'Design and analytical model of a platform-as-a-service cloud for healthcare', Journal of Internet Technology, vol. 16, no. 1, pp. 139-149.
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Recent progression in health informatics data analysis has been impeded due to lack of hospital resources and computation power. To remedy this, some researchers have proposed a cloud-based web service patient monitoring system capable of providing offsite collection, analysis, and dissemination of remote patient physiological data. Unfortunately, some of these cloud services are not effective without utilizing next-generation hardware management techniques. In order to make cloud based patient monitoring a reality, this paper shows how leveraging an underlying platform-as-a-service (PaaS) cloud model can provide integration with web service patient monitoring systems while providing high availability, scalability, and security. We also present an analytical model of the proposed platform and obtain performance measures such as delay in servicing as well as reject probability.
He, X & Liang, D 2015, 'Study of the Runout of Granular Columns with SPH Methods', International Journal of Offshore and Polar Engineering, vol. 25, no. 4, pp. 281-287.
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Heidari, R, Afroz, F, Subramanian, R, Cong, S, Sandrasegaran, K & Kong, X 2015, 'Packet Scheduling Study For Heterogeneous Traffic In Downlink 3gpplte System', International Journal of Wireless & Mobile Networks, vol. 7, no. 5, pp. 91-106.
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Long Term Evolution (LTE) network deploys Orthogonal Frequency Division Multiple Access (OFDMA)
technology for downlink multi-carrier transmission. To meet the Quality of Service (QoS) requirements for
LTE networks, packet scheduling has been employed. Packet scheduling determines when and how the
user’s packets are transmitted to the receiver. Therefore effective design of packet scheduling algorithm is
an important discussion. The aims of packet scheduling are maximizing system throughput, guaranteeing
fairness among users, andminimizing either or both PacketLoss Ratio (PLR)and packet delay. Inthis paper,
the performance of two packet scheduling algorithms namely Log Maximum-Largest Weighted Delay First
(LOG-MLWDF) and Max Delay Unit (MDU), developed for OFDM(Orthogonal Frequency Division
Multiplexing)networks, has been investigated in LTE downlink networks, and acomparison of those
algorithmswith a well-known scheduling algorithm namely Maximum-Largest Weighted Delay
First(MLWDF) has been studied.The performance evaluation was in terms of system throughput, PLR and
fairness index. This study was performed forboth real time (voice and video streaming)and non-real time
(best effort)perspectives. Results show that for streaming flows,LOG-MLWDF shows best PLR
performance among the considered scheduling schemes, and for best effort flows, it outperforms theother
two algorithms in terms of packet delay and throughput.
Heitor, A, Indraratna, B & Rujikiatkamjorn, C 2015, 'Effect of suction history on the small strain response of a dynamically compacted soil', Australian Geomechanics Journal, vol. 50, no. 4, pp. 61-68.
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Small strain behaviour is a key indicator in the assessment of the performance of compacted fills. Compaction conditions i.e. initial moisture content and applied energy, govern compaction effectiveness and thus the structure and matric suction of compacted soil. During the service life of earth structures, they experience changes in hydraulic behaviour owing to climatic changes. While the results of previous research studies indicate that the effect of changes in suction on the dynamic response is significant, only limited research has been engaged in the assessment of the effect of post-compacted changes in suction induced by periods of intensive precipitation (i.e. wetting) and drought (i.e. drying). The seasonal fluctuations of moisture reflected in the soil's suction history have an important impact on the geomechanical performance of compacted soil. In this paper, the aspects related to the effect of suction history of a compacted silty sand soil subjected to cycles of wetting and drying are described. The results not only confirm the importance of the recent suction ratio (or CSR) in governing the mechanical response at small strain but also suggest that subsequent wetting-drying cycles further induce hysteretic changes, particularly when following the wetting paths.
HEITOR, A, INDRARATNA, B & RUJIKIATKAMJORN, C 2015, 'The role of compaction energy on the small strain properties of a compacted silty sand subjected to drying–wetting cycles', Géotechnique, vol. 65, no. 9, pp. 717-727.
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The elastic properties of a soil are usually investigated to describe its engineering behaviour. The results of previous studies indicate that the effect of changes in suction on the elastic response at a small strain level of soils is significant during compaction and post-compaction periods. Limited efforts have been focused on quantifying those post-compacted responses due to the changes in suction induced by wetting and drying cycles. During their service life, most earth structures experience changes in hydraulic behaviour owing to climatic changes. These seasonal fluctuations in turn impact on the geomechanical performance of compacted soil. In this paper the aspects related to the elastic properties of compacted soils subjected to cycles of drying and wetting are described. Particular emphasis is placed on the effect of compaction energy on the hysteric behaviour (i.e. amplitude of the hysteresis loop) and its dependence on the initial stress state conditions and suction history. The results not only confirm the importance of the current suction in governing the shear and compression velocities and associated moduli, but they also suggest that subsequent drying–wetting cycles or suction history can further induce hysteretic changes, particularly along the wetting paths.
Henderson, IEJ, Zhu, XQ, Uy, B & Mirza, O 2015, 'Dynamic behaviour of steel–concrete composite beams with different types of shear connectors. Part I: Experimental study', Engineering Structures, vol. 103, pp. 298-307.
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Henderson, IEJ, Zhu, XQ, Uy, B & Mirza, O 2015, 'Dynamic behaviour of steel–concrete composite beams with different types of shear connectors. Part II: Modelling and comparison', Engineering Structures, vol. 103, pp. 308-317.
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Hesamian, MH, Mashohor, S, Saripan, MI & Wan Adnan, WA 2015, 'Effect of image resolution on intensity based scene illumination classification using neural network', The Imaging Science Journal, vol. 63, no. 8, pp. 433-439.
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In this paper, a framework for testing scene illumination classification with different image resolutions is proposed. The testing aims to provide the researchers with valuable information about the effect of image resolution on scene illumination classification using a neural network. The experiment is done by extracting three types of features from the images. These three types consist of statistical features, physic based features and histogram based features. It has been demonstrated that scene illumination classification can be affected by changing the image resolution. Despite the popular belief that high resolution images lead to better results, scene illumination classification by the proposed method performed best using low resolution images. At the second part of discussion, the reason behind this phenomenon is mathematically analysed and explained.
Ho, L & Fatahi, B 2015, 'Analytical solution for the two-dimensional plane strain consolidation of an unsaturated soil stratum subjected to time-dependent loading', COMPUTERS AND GEOTECHNICS, vol. 67, pp. 1-16.
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Ho, L, Fatahi, B & Khabbaz, H 2015, 'A closed form analytical solution for two-dimensional plane strain consolidation of unsaturated soil stratum', INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS, vol. 39, no. 15, pp. 1665-1692.
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Hoang, DT, Lu, X, Niyato, D, Wang, P & Han, Z 2015, 'Applications of Repeated Games in Wireless Networks: A Survey', IEEE COMMUNICATIONS SURVEYS AND TUTORIALS, vol. 17, no. 4, pp. 2102-2135.
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A repeated game is an effective tool to model interactions and conflicts for
players aiming to achieve their objectives in a long-term basis. Contrary to
static noncooperative games that model an interaction among players in only one
period, in repeated games, interactions of players repeat for multiple periods;
and thus the players become aware of other players' past behaviors and their
future benefits, and will adapt their behavior accordingly. In wireless
networks, conflicts among wireless nodes can lead to selfish behaviors,
resulting in poor network performances and detrimental individual payoffs. In
this paper, we survey the applications of repeated games in different wireless
networks. The main goal is to demonstrate the use of repeated games to
encourage wireless nodes to cooperate, thereby improving network performances
and avoiding network disruption due to selfish behaviors. Furthermore, various
problems in wireless networks and variations of repeated game models together
with the corresponding solutions are discussed in this survey. Finally, we
outline some open issues and future research directions.
Hoang, DT, Niyato, D, Wang, P & Kim, DI 2015, 'Performance Analysis of Wireless Energy Harvesting Cognitive Radio Networks Under Smart Jamming Attacks', IEEE Transactions on Cognitive Communications and Networking, vol. 1, no. 2, pp. 200-216.
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In cognitive radio networks with wireless energy harvesting, secondary users are able to harvest energy from a wireless power source and then use the harvested energy to transmit data opportunistically on an idle channel allocated to primary users. Such networks have become more common due to pervasiveness of wireless charging, improving the performance of the secondary users. However, in such networks, the secondary users can be vulnerable to jamming attacks by malicious users who can also harvest wireless energy to launch the attacks. In this paper, we first formulate the throughput optimization problem for a secondary user under the attacks by jammers as a Markov decision process (MDP). We then introduce a new solution based on the deception tactic to deal with smart jamming attacks. Furthermore, we propose a learning algorithm for the secondary user to find an optimal transmission policy and extend to the case with multiple secondary users in the same environment. Through the simulations, we demonstrate that the proposed learning algorithms can effectively reduce adverse effects from smart jammers even when they use different attack strategies.
Hoang, DT, Niyato, D, Wang, P & Kim, DI 2015, 'Performance Optimization for Cooperative Multiuser Cognitive Radio Networks with RF Energy Harvesting Capability', IEEE Transactions on Wireless Communications, vol. 14, no. 7, pp. 3614-3629.
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Hokmabadi, AS, Fatahi, B & Samali, B 2015, 'Physical Modeling of Seismic Soil-Pile-Structure Interaction for Buildings on Soft Soils', International Journal of Geomechanics, vol. 15, no. 2, pp. 04014046-04014046.
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The present research intends to study the effects of the seismic soil-pile-structure interaction (SSPSI) on the dynamic response of buildings with various heights by conducting a series of shaking table tests on 5-, 10-story, and 15-story model structures. Two types of foundations for each case are investigated, including (1) a fixed-base structure, representing the situation excluding the soil-structure interaction; and (2) a structure supported by an end-bearing pile foundation in soft soil. An advanced laminar soil container has been designed that uses three-dimensional numerical modeling to minimize the boundary effects and to simulate free-field motion during the shaking table tests. Four real earthquake events, including Kobe 1995, Northridge 1994, El Centro 1940, and Hachinohe 1968, are imposed to each model. According to the experimental measurements, it is observed that the SSPSI amplifies the maximum lateral deflections and in turn interstory drifts of the structures supported by end-bearing pile foundations in comparison with the fixed-base structures. The rocking component plays an important role in increasing the lateral deflection of the superstructures, which can shift the performance level of the structures to near collapse or even collapse levels and as a result should be assessed precisely in the seismic design of buildings resting on soft soils.
Hong, H, Pradhan, B, Xu, C & Tien Bui, D 2015, 'Spatial prediction of landslide hazard at the Yihuang area (China) using two-class kernel logistic regression, alternating decision tree and support vector machines', CATENA, vol. 133, pp. 266-281.
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Ho-Pham, LT, Lai, TQ, Mai, LD, Doan, MC, Pham, HN & Nguyen, TV 2015, 'Prevalence and Pattern of Radiographic Intervertebral Disc Degeneration in Vietnamese: A Population-Based Study', Calcified Tissue International, vol. 96, no. 6, pp. 510-517.
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Ho-Pham, LT, Lai, TQ, Nguyen, MTT & Nguyen, TV 2015, 'Relationship between Body Mass Index and Percent Body Fat in Vietnamese: Implications for the Diagnosis of Obesity', PLOS ONE, vol. 10, no. 5, pp. e0127198-e0127198.
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BACKGROUND: The burden of obesity in Vietnam has not been well defined because there is a lack of reference data for percent body fat (PBF) in Asians. This study sought to define the relationship between PBF and body mass index (BMI) in the Vietnamese population. METHODS: The study was designed as a comparative cross-sectional investigation that involved 1217 individuals of Vietnamese background (862 women) aged 20 years and older (average age 47 yr) who were randomly selected from the general population in Ho Chi Minh City. Lean mass (LM) and fat mass (FM) were measured by DXA (Hologic QDR 4500). PBF was derived as FM over body weight. RESULTS: Based on BMI ≥30, the prevalence of obesity was 1.1% and 1.3% for men and women, respectively. The prevalence of overweight and obesity combined (BMI ≥25) was ~24% and ~19% in men and women, respectively. Based on the quadratic relationship between BMI and PBF, the approximate PBF corresponding to the BMI threshold of 30 (obese) was 30.5 in men and 41 in women. Using the criteria of PBF >30 in men and PBF >40 in women, approximately 15% of men and women were considered obese. CONCLUSION: These data suggest that body mass index underestimates the prevalence of obesity. We suggest that a PBF >30 in men or PBF >40 in women is used as criteria for the diagnosis of obesity in Vietnamese adults. Using these criteria, 15% of Vietnamese adults in Ho Chi Minh City was considered obese.
Ho-Pham, LT, Nguyen, SC, Tran, B & Nguyen, TV 2015, 'Contributions of Caucasian-associated bone mass loci to the variation in bone mineral density in Vietnamese population', Bone, vol. 76, pp. 18-22.
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Hossain, L, Karimi, F & Wigand, RT 2015, 'Dynamics of a Global Zoonotic Research Network Over 33 Years (1980–2012)', Disaster Medicine and Public Health Preparedness, vol. 9, no. 5, pp. 496-503.
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AbstractObjectiveThe increasing rate of outbreaks in humans of zoonotic diseases requires detailed examination of the education, research, and practice of animal health and its connection to human health. This study investigated the collaboration network of different fields engaged in conducting zoonotic research from a transdisciplinary perspective.MethodsExamination of the dynamics of this network for a 33-year period from 1980 to 2012 is presented through the development of a large scientometric database from Scopus. In our analyses we compared several properties of these networks, including density, clustering coefficient, giant component, and centrality measures over time. We also elicited patterns in different fields of study collaborating with various other fields for zoonotic research.ResultsWe discovered that the strongest collaborations across disciplines are formed among the fields of medicine; biochemistry, genetics, and molecular biology; immunology and microbiology; veterinary; agricultural and biological sciences; and social sciences. Furthermore, the affiliation network is growing overall in terms of collaborative research among different fields of study such that more than two-thirds of all possible collaboration links among disciplines have already been formed.ConclusionsOur findings indicate that zoonotic research scientists in different fields (human or animal health, social science, earth and environmental sciences, engineering) have been actively collaborating with each other over the past 11 years. (...
Hossain, L, Karimi, F, Wigand, RT & Crawford, JW 2015, 'Evolutionary longitudinal network dynamics of global zoonotic research', Scientometrics, vol. 103, no. 2, pp. 337-353.
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Hossain, MA, Canning, J, Ast, S, Cook, K, Rutledge, PJ & Jamalipour, A 2015, 'Combined 'dual' absorption and fluorescence smartphone spectrometers', OPTICS LETTERS, vol. 40, no. 8, pp. 1737-1740.
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Hossain, MA, Canning, J, Ast, S, Rutledge, PJ & Jamalipour, A 2015, 'Early warning smartphone diagnostics for water security and analysis using real-time pH mapping', Photonic Sensors, vol. 5, no. 4, pp. 289-297.
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Hossain, MA, Canning, J, Ast, S, Rutledge, PJ, Yen, TL & Jamalipour, A 2015, 'Lab-in-a-Phone: Smartphone-Based Portable Fluorometer for pH Measurements of Environmental Water', IEEE SENSORS JOURNAL, vol. 15, no. 9, pp. 5095-5102.
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Hossain, MA, Canning, J, Cook, K & Jamalipour, A 2015, 'Smartphone laser beam spatial profiler', Optics Letters, vol. 40, no. 22, pp. 5156-5156.
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Hossain, MJ, Pota, HR, Mahmud, MA & Aldeen, M 2015, 'Robust Control for Power Sharing in Microgrids With Low-Inertia Wind and PV Generators', IEEE Transactions on Sustainable Energy, vol. 6, no. 3, pp. 1067-1077.
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Hossain, MS, Zander, P-O, Kamal, MS & Chowdhury, L 2015, 'Belief-rule-based expert systems for evaluation of e-government: a case study', Expert Systems, vol. 32, no. 5, pp. 563-577.
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Hosseini, SSS, Yang, X-S, Gandomi, AH & Nemati, A 2015, 'Solutions of Non-smooth Economic Dispatch Problems by Swarm Intelligence', Adaptation, Learning, and Optimization, vol. 18, pp. 129-146.
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© Springer International Publishing Switzerland 2015. The increasing costs of fuels and operations of power generating units necessitate the development of optimization methods for economic dispatch (ED) problems. Classical optimization techniques such as direct search and gradient methods often fail to find global optimum solutions. Modern optimization techniques are often meta-heuristic, and they are very promising in solving nonlinear programming problems. This chapter presents a novel method to determine the feasible optimal solutions of the ED problems utilizing the newly developed Bat Algorithm (BA). The proposed BA is based on the echolocation behavior of bats. This technique is adapted to solve non-convex ED problems under different nonlinear constraints such as transmission losses, ramp rate limits, multi-fuel options and prohibited operating zones. Parameters are tuned to give the best results for these problems. To describe the efficiency and applicability of the proposed algorithm, we will use four ED test systems with non-convexity. We will compare our results with some of the most recently published ED solution methods. Comparing with the other existing techniques, the proposed approach can find better solutions than other methods. This method can be deemed to be a promising alternative for solving the ED problems in real systems.
Hou, L, Yin, G, Liu, M, Zhou, J, Zheng, Y, Gao, J, Zong, H, Yang, Y, Gao, L & Tong, C 2015, 'Effects of Sulfamethazine on Denitrification and the Associated N2O Release in Estuarine and Coastal Sediments', Environmental Science & Technology, vol. 49, no. 1, pp. 326-333.
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Hoven, E & van Bergen, T 2015, 'Tangible Cooperative Gestures: Improving Control and Initiative in Digital Photo Sharing', Machines, vol. 3, no. 4, pp. 268-295.
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This paper focuses on co-present digital photo sharing on a notebook and investigates how this could be supported. While analyzing the current digital photo sharing situation we noticed that there was a high threshold for visitors to take control of the personal computer of the photo owner, resulting in inequity of participation. It was assumed that visitors would have the opportunity to interact with the notebook more freely if this threshold was lowered by distributing the user interface and creating a more public, instead of personal, interaction space. This, in turn, could make them feel more involved and in control during a session, creating a more enjoyable experience. To test these assumptions a design prototype was created that stimulates participants to use tangible artifacts for cooperative gestures, a promising direction for the future of HCI. The situation with the cooperative gestures was compared with the regular digital photo sharing situation, which makes use of a keyboard. In dyads, visitors felt more involved and in control in the design prototype cooperative gestures condition (especially during storytelling), resulting in a more enjoyable digital photo sharing experience.
Hsieh, M-H & Watanabe, S 2015, 'Channel Simulation and Coded Source Compression', IEEE Transactions on Information Theory, vol. 62, no. 11, pp. 6609-6619, Nov. 2016, vol. 62, no. 11, pp. 6609-6619.
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Coded source compression, also known as source compression with helpers, has
been a major variant of distributed source compression, but has hitherto
received little attention in the quantum regime. This work treats and solves
the corresponding quantum coded source compression through an observation that
connects coded source compression with channel simulation. First, we consider
classical source coding with quantum side information where the quantum side
information is observed by a helper and sent to the decoder via a classical
channel. We derive a single-letter characterization of the achievable rate
region for this problem. The direct coding theorem of our result is proved via
the measurement compression theory of Winter, a quantum-to-classical channel
simulation. Our result reveals that a helper's scheme which separately conducts
a measurement and a compression is suboptimal, and measurement compression
seems necessary to achieve the optimal rate region. We then study coded source
compression in the fully quantum regime, where two different scenarios are
considered depending on the types of communication channels between the
legitimate source and the receiver. We further allow entanglement assistance
from the quantum helper in both scenarios. We characterize the involved quantum
resources, and derive single-letter expressions of the achievable rate region.
The direct coding proofs are based on well-known quantum protocols, the quantum
state merging protocol and the fully quantum Slepian-Wolf protocol, together
with the quantum reverse Shannon theorem.
Hsu, B-W, Wang, M-JJ, Chen, C-Y & Chen, F 2015, 'Effective Indices for Monitoring Mental Workload While Performing Multiple Tasks', Perceptual and Motor Skills, vol. 121, no. 1, pp. 94-117.
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This study identified several physiological indices that can accurately monitor mental workload while participants performed multiple tasks with the strategy of maintaining stable performance and maximizing accuracy. Thirty male participants completed three 10-min. simulated multitasks: MATB (Multi-Attribute Task Battery) with three workload levels. Twenty-five commonly used mental workload measures were collected, including heart rate, 12 HRV (heart rate variability), 10 EEG (electroencephalography) indices (α, β, θ, α/θ, θ/β from O1-O2 and F4-C4), and two subjective measures. Analyses of index sensitivity showed that two EEG indices, θ and α/θ (F4-C4), one time-domain HRV-SDNN (standard deviation of inter-beat intervals), and four frequency-domain HRV: VLF (very low frequency), LF (low frequency), %HF (percentage of high frequency), and LF/HF were sensitive to differentiate high workload. EEG α/θ (F4-C4) and LF/HF were most effective for monitoring high mental workload. LF/HF showed the highest correlations with other physiological indices. EEG α/θ (F4-C4) showed strong correlations with subjective measures across diff erent mental workload levels. Operation strategy would affect the sensitivity of EEG α (F4-C4) and HF.
Hu, H, Choo, Y, Feng, X & Osuji, CO 2015, 'Physical Continuity and Vertical Alignment of Block Copolymer Domains by Kinetically Controlled Electrospray Deposition', Macromolecular Rapid Communications, vol. 36, no. 13, pp. 1290-1296.
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Hu, J, Zhu, J & Dorrell, DG 2015, 'Model Predictive Control of Grid-Connected Inverters for PV Systems With Flexible Power Regulation and Switching Frequency Reduction', IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, vol. 51, no. 1, pp. 587-594.
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Hu, J, Zhu, J & Dorrell, DG 2015, 'Predictive Direct Power Control of Doubly Fed Induction Generators Under Unbalanced Grid Voltage Conditions for Power Quality Improvement', IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, vol. 6, no. 3, pp. 943-950.
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Hu, Y, Zhang, J, Cao, W, Wu, J, Tian, GY, Finney, SJ & Kirtley, JL 2015, 'Online Two-Section PV Array Fault Diagnosis With Optimized Voltage Sensor Locations', IEEE Transactions on Industrial Electronics, vol. 62, no. 11, pp. 7237-7246.
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Huang, C-S, Pal, NR, Chuang, C-H & Lin, C-T 2015, 'Identifying changes in EEG information transfer during drowsy driving by transfer entropy', Frontiers in Human Neuroscience, vol. 9.
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Huang, L, Cheng, J, Li, X, Yuan, D, Ni, W, Qu, G, Guan, Q, Zhang, Y & Wang, B 2015, 'Sulfur quantum dots wrapped by conductive polymer shell with internal void spaces for high-performance lithium–sulfur batteries', Journal of Materials Chemistry A, vol. 3, no. 7, pp. 4049-4057.
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Novel core–shell sulfur quantum dots/PVK nanocomposites were synthesized by a facile two-step dissolution–precipitation method.
Huang, TN, Yi, X, Boon, CC, He, X, Feng, G, Lim, WM & Zhu, X 2015, 'A CMOS W-Band <formula formulatype='inline'> <tex Notation='TeX'>$4{\times}$</tex></formula> Quasi-Subharmonic Mixer', IEEE Microwave and Wireless Components Letters, vol. 25, no. 6, pp. 385-387.
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Huang, W, Huang, L, Sheng, D & Sloan, SW 2015, 'DEM modelling of shear localization in a plane Couette shear test of granular materials', Acta Geotechnica, vol. 10, no. 3, pp. 389-397.
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Huang, X, Cheng, H, Li, R-H, Qin, L & Yu, JX 2015, 'Top-K structural diversity search in large networks.', VLDB J., vol. 24, pp. 319-343.
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Social contagion depicts a process of information (e.g., fads, opinions, news) diffusion in the online social networks. A recent study reports that in a social contagion process, the probability of contagion is tightly controlled by the number of connected components in an individual’s neighborhood. Such a number is termed structural diversity of an individual, and it is shown to be a key predictor in the social contagion process. Based on this, a fundamental issue in a social network is to find top-k users with the highest structural diversities. In this paper, we, for the first time, study the top-k structural diversity search problem in a large network. Specifically, we study two types of structural diversity measures, namely, component-based structural diversity measure and core-based structural diversity measure. For component-based structural diversity, we develop an effective upper bound of structural diversity for pruning the search space. The upper bound can be incrementally refined in the search process. Based on such upper bound, we propose an efficient framework for top-k structural diversity search. To further speed up the structural diversity evaluation in the search process, several carefully devised search strategies are proposed. We also design efficient techniques to handle frequent updates in dynamic networks and maintain the top-k results. We further show how the techniques proposed in component-based structural diversity measure can be extended to handle the core-based structural diversity measure. Extensive experimental studies are conducted in real-world large networks and synthetic graphs, and the results demonstrate the efficiency and effectiveness of the proposed methods.
Huang, X, Zhang, JA & Guo, YJ 2015, 'Out-of-band emission reduction and a unified framework for precoded OFDM', IEEE Communications Magazine, vol. 53, no. 6, pp. 151-159.
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© 1979-2012 IEEE. OFDM has been regarded as a promising candidate for use in cognitive radio systems with dynamic spectrum reuse capability. However, conventional OFDM has significant OOBE, which can cause severe interference to systems operating in adjacent frequency bands. In addition to conventional techniques such as spectral shaping filtering, guard band insertion, and time domain windowing, new OOBE reduction techniques, including cancellation carrier and spectral precoding, have been proposed in recent years. This article reviews various OOBE reduction techniques and proposes a generalized lowcomplexity OOBE reduction framework for discrete Fourier transform precoded OFDM. With the allocation of explicit frequency domain cancellation subcarriers and data domain cancellation symbols, the proposed framework enables various configurations to achieve significant OOBE reduction with low implementation complexity, and provides flexibility in balancing OOBE reduction and other performance metrics such as peak-to-average power ratio.
Huang, Y, Hong, G & Huang, R 2015, 'Investigation to charge cooling effect and combustion characteristics of ethanol direct injection in a gasoline port injection engine', Applied Energy, vol. 160, pp. 244-254.
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Huang, Y, Hong, G & Huang, R 2015, 'Numerical investigation to the dual-fuel spray combustion process in an ethanol direct injection plus gasoline port injection (EDI+GPI) engine', Energy Conversion and Management, vol. 92, pp. 275-286.
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Ethanol direct injection plus gasoline port injection (EDI + GPI) is a new technology to make the use of ethanol fuel more effective and efficient in spark ignition engines. Multi-dimensional computational fluid dynamics modelling was conducted on an EDI + GPI engine in both single and dual fuelled conditions. The in-cylinder flow field was solved in the realizable k−ε turbulence model with detailed engine geometry. The temporal and spatial distributions of the liquid and vapour fuels were simulated with the spray breakup and evaporation models. The combustion process was modelled with the partially premixed combustion concept in which both mixture fraction and progress variable were solved. The three-dimensional and five-dimensional presumed Probability Density Function (PDF) look-up tables were used to model the single-fraction-mixture and two-fraction-mixture turbulence–chemistry interactions respectively. The model was verified by comparing the numerical and experimental results of spray pattern and cylinder pressure. The simulation results showed that the combustion process of EDI + GPI dual-fuelled condition was partially premixed combustion because of the low evaporation rate of ethanol spray in low temperature environment before combustion. Compared with GPI only, the higher flame speed of ethanol fuel contributed to the greater pressure rise rate and maximum cylinder pressure in EDI + GPI condition, which consequently resulted in higher power output and thermal efficiency. The lower adiabatic flame temperature of ethanol, partially premixed combustion mode and stronger cooling effect of ethanol direct injection in EDI + GPI led to the reduced combustion temperature which contributed to the decrease of NO emission. Among these three factors, the lower adiabatic flame temperature and partially premixed combustion mode were the dominating factors that resulted in the low combustion temperature of EDI + GPI. On the other hand, CO and HC emissions increased b...
Hussain, FK 2015, 'Special issue on intelligent e-services', CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE, vol. 27, no. 4, pp. 763-764.
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Hussain, OK, Zia-ur-Rahman, Hussain, FK, Singh, J, Janjua, NK & Chang, E 2015, 'A User-Based Early Warning Service Management Framework in Cloud Computing', COMPUTER JOURNAL, vol. 58, no. 3, pp. 472-496.
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Cloud computing is a very attractive option for service users and service providers for their businesses because of the benefits it provides. A major concern among service users regarding cloud adoption, however, is the unpredictability of performance in relation to the services provided. Even though guarantees in the form of service-level agreements are provided to users by service providers, real-time service-level degradability remains a critical concern; hence, there is a need for an approach that assists users to manage a service before it fails. The approaches proposed in the literature assess and evaluate the performance of the cloud infrastructure of providers, but this does not guarantee that a given service instance will meet the desired quality level because there may be factors other than the provider's infrastructure that will affect the level of quality of the service instance. In this paper, we present an approach that measures the quality of a service instance in real time and provides important analysis for service users as to whether they will achieve their desired objectives. This analysis also constitutes an important input for service users in the assessment and management of a service to avoid the failure to achieve objectives.
Hussain, S, Roy, NC, Hossain, MA & Saha, SC 2015, 'Effect of Fluctuating Surface Heat and Mass Flux on Natural Convection Flow along a Vertical Flat Plate', Mathematical Problems in Engineering, vol. 2015, pp. 1-15.
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An investigation has been carried on double diffusive effect on boundary layer flow due to small amplitude oscillation in surface heat and mass flux. Extensive parametric simulations were performed in order to elucidate the effects of some important parameters, that is, Prandtl number, Schmidt number, and Buoyancy ratio parameter on flow field in conjunction with heat and mass transfer. Asymptotic solutions for low and high frequencies are obtained for the conveniently transformed governing coupled equations. Solutions are also obtained for wide ranged value of the frequency parameters. Comparisons between the asymptotic and wide ranged values are made in terms of the amplitudes and phases of the shear stress, surface heat transfer, and surface mass transfer. It has been found that the amplitudes and phase angles obtained from asymptotic solutions are found in good agreement with the finite difference solutions obtained for wide ranged value of the frequency parameter.
Hussaini, SKK, Indraratna, B & Vinod, JS 2015, 'Application of Optical-Fiber Bragg Grating Sensors in Monitoring the Rail Track Deformations', Geotechnical Testing Journal, vol. 38, no. 4, pp. 20140123-20140123.
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Hussaini, SKK, Indraratna, B & Vinod, JS 2015, 'Performance assessment of geogrid-reinforced railroad ballast during cyclic loading', Transportation Geotechnics, vol. 2, pp. 99-107.
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© 2014 Elsevier Ltd. Recently, rail practitioners have resorted to the use of geogrids as a low-cost solution to stabilise ballast. In view of this, large-scale cyclic tests have been conducted on reinforced ballast using a modified process simulation test (MPST) apparatus at a loading frequency of 20. Hz, with geogrid placed at the subballast-ballast interface and within the ballast. Fresh latite basalt having a mean particle size of 35. mm and geogrids with different aperture sizes was used. The experimental results indicate that the geogrid arrests the lateral spreading of ballast, reduces the extent of permanent vertical settlement and minimises the particle breakage. However, the in track performance is shown to be influenced by the shear behaviour at the ballast-geogrid interface, wherein the extent of both lateral and vertical deformation reduce with the increase in shear strength at the ballast-geogrid interface. Moreover, the geogrid also helps in minimising the extent of differential track settlement that arises due to the difference in sleeper-ballast contact stress along the track length. The efficiency of geogrid is found to be identical at vertical stresses of 230 and 460. kPa. These test results highlight the role of geogrid in stabilising ballast, thus encouraging its use in railway applications.
Hyde, PJ, Tipper, J, Fisher, J & Hall, RM 2015, 'Wear and biological effects of a semi-constrained total disc replacement subject to modified ISO standard test conditions', Journal of the Mechanical Behavior of Biomedical Materials, vol. 44, pp. 43-52.
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Iacopi, F, Mishra, N, Cunning, BV, Goding, D, Dimitrijev, S, Brock, R, Dauskardt, RH, Wood, B & Boeckl, J 2015, 'A catalytic alloy approach for graphene on epitaxial SiC on silicon wafers', Journal of Materials Research, vol. 30, no. 5, pp. 609-616.
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Abstract
Iacopi, F, Van Hove, M, Charles, M & Endo, K 2015, 'Power electronics with wide bandgap materials: Toward greener, more efficient technologies', MRS Bulletin, vol. 40, no. 5, pp. 390-395.
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Abstract
Imtenan, S, Ashrafur Rahman, SM, Masjuki, HH, Varman, M & Kalam, MA 2015, 'Effect of dynamic injection pressure on performance, emission and combustion characteristics of a compression ignition engine', Renewable and Sustainable Energy Reviews, vol. 52, pp. 1205-1211.
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Imtenan, S, Masjuki, HH, Varman, M & Rizwanul Fattah, IM 2015, 'Evaluation of n-butanol as an oxygenated additive to improve combustion-emission-performance characteristics of a diesel engine fuelled with a diesel-calophyllum inophyllum biodiesel blend', RSC Advances, vol. 5, no. 22, pp. 17160-17170.
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Oxygenated additives modify the physicochemical properties of the biodiesel–diesel blends which influences the combustion mechanism in a way that improves the performance and emission characteristics significantly.
Imtenan, S, Masjuki, HH, Varman, M, Rizwanul Fattah, IM, Sajjad, H & Arbab, MI 2015, 'Effect of n-butanol and diethyl ether as oxygenated additives on combustion–emission-performance characteristics of a multiple cylinder diesel engine fuelled with diesel–jatropha biodiesel blend', Energy Conversion and Management, vol. 94, pp. 84-94.
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Indraratna, B 2015, 'Editorial', Proceedings of the Institution of Civil Engineers - Ground Improvement, vol. 168, no. 1, pp. 1-2.
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Indraratna, B, Biabani, MM & Nimbalkar, S 2015, 'Behavior of Geocell-Reinforced Subballast Subjected to Cyclic Loading in Plane-Strain Condition', Journal of Geotechnical and Geoenvironmental Engineering, vol. 141, no. 1, pp. 04014081-04014081.
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Indraratna, B, Israr, J & Rujikiatkamjorn, C 2015, 'Geometrical Method for Evaluating the Internal Instability of Granular Filters Based on Constriction Size Distribution', Journal of Geotechnical and Geoenvironmental Engineering, vol. 141, no. 10, pp. 04015045-04015045.
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Indraratna, B, Kumara, C, Zhu, S-P & Sloan, S 2015, 'Mathematical Modeling and Experimental Verification of Fluid Flow through Deformable Rough Rock Joints', International Journal of Geomechanics, vol. 15, no. 4, pp. 04014065-04014065.
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Indraratna, B, Mahdi Biabani, M & Nimbalkar, S 2015, 'Closure to “Behavior of Geocell-Reinforced Subballast Subjected to Cyclic Loading in Plane-Strain Condition” by Buddhima Indraratna, M. Mahdi Biabani, and Sanjay Nimbalkar', Journal of Geotechnical and Geoenvironmental Engineering, vol. 141, no. 10, pp. 07015028-07015028.
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Indraratna, B, Ngo, NT, Rujikiatkamjorn, C & Sloan, SW 2015, 'Coupled discrete element–finite difference method for analysing the load-deformation behaviour of a single stone column in soft soil', Computers and Geotechnics, vol. 63, pp. 267-278.
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Indraratna, B, Pathirage, U & Banasiak, L 2015, 'A review of acidic groundwater remediation in the shoalhaven floodplain in Australia', Geotechnical Engineering, vol. 46, no. 4, pp. 41-46.
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Acid sulfate soils can be found around low-lying coastal floodplains. Acidic groundwater generated from acid sulfate soils creates adverse conditions to vegetation and aquatic life and corrodes steel and concrete infrastructure. As long as these soils are undisturbed and below the groundwater table, they are chemically inert. Therefore, it is important to maintain the groundwater table above the sulfidic soil horizon. Modified floodgates and weirs have been implemented in these low-lying areas to improve water quality. Nevertheless, these methods are not promising in low-lying areas because of the risk of flooding. As a solution, a pilot-scale permeable reactive barrier was installed and has proven to be a promising technology for long-term remediation. This paper presents a review of the above mentioned methods used for acidic groundwater remediation in coastal Australia with detailed field verification data.
Indraratna, B, Perera, D, Rujikiatkamjorn, C & Kelly, R 2015, 'Soil disturbance analysis due to vertical drain installation', Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, vol. 168, no. 3, pp. 236-246.
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The installation of drains creates a disturbed region known as a smear zone where the change in the clay structure affects the horizontal permeability and compressibility. The parameters required to characterise the smear effect are the extent of the smear zone and the ratio of the horizontal coefficient of permeability in the undisturbed zone and in the smear zone. Only limited studies have been carried out on different aspects of soil disturbance due to driving vertical drains and its effects on the subsequent consolidation. In this paper the disturbed zone around a rectangular mandrel was characterised using soil samples obtained from the soft clay layer at various locations beneath an embankment built at Ballina, Australia, where vertical drains were installed. By determining the change in the coefficient of permeability, the water content and volume compressibility across the smear zone, the effects of soil disturbance on consolidation due to the installation of drains can be quantified using the available numerical model.
Indraratna, B, Sun, QD & Nimbalkar, S 2015, 'Observed and predicted behaviour of rail ballast under monotonic loading capturing particle breakage', Canadian Geotechnical Journal, vol. 52, no. 1, pp. 73-86.
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A substantial amount of experimental evidence suggests that the critical state envelope for ballast is nonlinear, especially at low confining pressure. To study the implications of this nonlinearity and the associated role of particle breakage, monotonically loaded drained triaxial tests were conducted using a large-scale cylindrical triaxial apparatus. A nonlinear critical state envelope is determined in the q–p′ and υ–lnp′ planes. Mathematical expressions for critical state stress ratio and specific volume are proposed to incorporate the evolution of particle breakage during monotonic shearing. In this paper, an elastoplastic constitutive model based on the critical state soil mechanics framework is presented to capture the salient aspects of stress–strain behaviour and degradation of ballast. Constitutive parameters were conveniently determined from large-scale laboratory tests. The model is able to predict the monotonic shear behaviour of ballast corroborating with the laboratory measurements. The proposed model is further validated using experimental results available from past independent studies.
Indraratna, B, Thirukumaran, S, Brown, ET & Zhu, S-P 2015, 'Modelling the Shear Behaviour of Rock Joints with Asperity Damage Under Constant Normal Stiffness', Rock Mechanics and Rock Engineering, vol. 48, no. 1, pp. 179-195.
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Iqbal, MA, Varman, M, Hassan, MH, Kalam, MA, Hossain, S & Sayeed, I 2015, 'Tailoring fuel properties using jatropha, palm and coconut biodiesel to improve CI engine performance and emission characteristics', Journal of Cleaner Production, vol. 101, pp. 262-270.
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Irga, PJ, Burchett, MD & Torpy, FR 2015, 'Does urban forestry have a quantitative effect on ambient air quality in an urban environment?', ATMOSPHERIC ENVIRONMENT, vol. 120, pp. 173-181.
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Ismail, MS, Moghavvemi, M, Mahlia, TMI, Muttaqi, KM & Moghavvemi, S 2015, 'Effective utilization of excess energy in standalone hybrid renewable energy systems for improving comfort ability and reducing cost of energy: A review and analysis', Renewable and Sustainable Energy Reviews, vol. 42, pp. 726-734.
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Ivanyos, G, Karpinski, M, Qiao, Y & Santha, M 2015, 'Generalized Wong sequences and their applications to Edmonds' problems', Journal of Computer and System Sciences, vol. 81, no. 7, pp. 1373-1386.
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© 2015 Elsevier Inc. Given a linear subspace B of the n×n matrices over some field F, we consider the following problems: symbolic matrix rank (SMR) asks to determine the maximum rank among matrices in B, while symbolic determinant identity testing (SDIT) asks to decide whether there exists a nonsingular matrix in B. The constructive versions of these problems ask to find a matrix of maximum rank, respectively a nonsingular matrix, if there exists one. Our first algorithm solves the constructive SMR when B is spanned by unknown rank one matrices, answering an open question of Gurvits. Our second algorithm solves the constructive SDIT when B is spanned by triangularizable matrices. (The triangularization is not given explicitly.) Both algorithms work over fields of size ≥n+1. Our framework is based on generalizing Wong sequences, a classical method to deal with pairs of matrices, to pairs of matrix spaces.
Izadyar, N, Ghadamian, H, Ong, HC, moghadam, Z, Tong, CW & Shamshirband, S 2015, 'Appraisal of the support vector machine to forecast residential heating demand for the District Heating System based on the monthly overall natural gas consumption', Energy, vol. 93, pp. 1558-1567.
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Izadyar, N, Ong, HC, Shamshirband, S, Ghadamian, H & Tong, CW 2015, 'Intelligent forecasting of residential heating demand for the District Heating System based on the monthly overall natural gas consumption', Energy and Buildings, vol. 104, pp. 208-214.
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Jacobs, DA & Waldron, KJ 2015, 'Modeling Inelastic Collisions With the Hunt–Crossley Model Using the Energetic Coefficient of Restitution', Journal of Computational and Nonlinear Dynamics, vol. 10, no. 2.
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Modeling collision and contact accurately is essential to simulating many multibody systems. The three parameter Hunt–Crossley model is a continuous collision model for representing the contact dynamics of viscoelastic systems. By augmenting Hertz's elastic theory with a nonlinear damper, Hunt and Crossley captured part of the viscoelastic and velocity dependent behavior found in many systems. In the Hunt–Crossley model, the power parameter and the elastic coefficient can be related to the physical properties through Hertz's elastic theory but the damping coefficient cannot. Generally, the damping coefficient is related to an empirical measurement, the coefficient of restitution. Over the past few decades, several authors have posed relationships between the coefficient of restitution and the damping constant but key challenges remain. In the first portion of the paper, we derive an approximate expression for Stronge's (energetic) coefficient of restitution that has better accuracy for high velocities and low coefficient of restitution values than the published solutions based on Taylor series approximations. We present one method for selecting the model parameters from five empirical measurements using a genetic optimization routine. In the second portion of the paper, we investigate the application of the Hunt–Crossley model to an inhomogeneous system of a rubber covered aluminum sphere on a plate. Although this system does not fit the inclusion criteria for the Hunt–Crossley, it is representative of many systems of interest where authors have chosen the Hunt–Crossley model to represent the contact dynamics. The results show that a fitted model well predicts collision behavior at low values of the coefficient of restitution.
Jahanshiri, E, bin Mohamed Shariff, AR, Amiri, F, Soom, MAM, Wayayokb, A, Buyonga, T & Pradhan, B 2015, 'Spatial soil analysis using geostatistical analysis and map Algebra', Arabian Journal of Geosciences, vol. 8, no. 11, pp. 9775-9788.
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Jamil, S, Loganathan, P, Kazner, C & Vigneswaran, S 2015, 'Forward osmosis treatment for volume minimisation of reverse osmosis concentrate from a water reclamation plant and removal of organic micropollutants', DESALINATION, vol. 372, pp. 32-38.
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Janjua, NK, Hussain, OK, Hussain, FK & Chang, E 2015, 'Philosophical and Logic-Based Argumentation-Driven Reasoning Approaches and their Realization on the WWW: A Survey', The Computer Journal, vol. 58, no. 9, pp. 1967-1999.
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Argumentation is the practice of systematic conscious reasoning involving the construction and evaluation of arguments to justify or support a particular conclusion. This article discusses, compares, contrasts and categorizes existing argumentation-based frameworks and applications as either philosophical or logic-based, and provides critical analysis that emphasizes the structure of arguments and the interactions between them. This review compares and contrasts the frameworks and applications of argumentation-based approaches on Web 2.0 and the Semantic Web, and subsequently highlights the importance and challenges of attaining monological argumentation on the Semantic Web.
Javaherian, C & Twamley, J 2015, 'Platonic quantum networks as coherence-assisted switches in perfect and imperfect situations', Journal of Physics D: Applied Physics, vol. 48, no. 23, pp. 235104-235104.
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Jayawardhana, M, Zhu, X, Liyanapathirana, R & Gunawardana, U 2015, 'An experimental study for decentralized damage detection of beam structures using wireless sensor networks', Structural Monitoring and Maintenance, vol. 2, no. 3, pp. 237-252.
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© 2015 Techno-Press, Ltd. This paper addresses the issue of reliability and performance in wireless sensor networks (WSN) based structural health monitoring (SHM), particularly with decentralized damage identification techniques. Two decentralized damage identification algorithms, namely, the autoregressive (AR) model based damage index and the Wiener filter method are developed for structural damage detection. The ambient and impact testing have been carried out on the steel beam structure in the laboratory. Seven wireless sensors are installed evenly along the steel beam and seven wired sensor are also installed on the beam to monitor the dynamic responses as comparison. The results showed that wireless measurements performed very much similar to wired measurements in detecting and localizing damages in the steel beam. Therefore, apart from the usual advantages of cost effectiveness, manageability, modularity etc., wireless sensors can be considered a possible substitute for wired sensors in SHM systems.
Jayawardhana, M, Zhu, X, Liyanapathirana, R & Gunawardana, U 2015, 'Statistical Damage Sensitive Feature for Structural Damage Detection Using AR Model Coefficients', Advances in Structural Engineering, vol. 18, no. 10, pp. 1551-1562.
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Structural Health Monitoring (SHM) and damage detection techniques have captured much interest and attention of researchers and structural engineers owing to their promising ability to provide spatial and quantitative information regarding structural damage and the performance of a structure during its life-cycle. With the development of smart sensors and communication technologies, Wireless Sensor Networks (WSN) has empowered the advancement in SHM. Recently, time series models have been widely used for structural damage detection due to the sensitivity of the model coefficients and residual errors to the damages in the structure. This paper presents a simple index that is computed using the Auto-Regressive (AR) model coefficients as an effective damage sensitive feature (DSF) for the detection of structural damage. Based on this feature, a damage identification method is developed. The Fisher information criterion of the computed DSF is used to statistically decide on the location of damage. This method has been implemented in a simulation environment and the verification of its accuracy in structural damage detection has been carried out experimentally. Experimental data is obtained using wireless sensors from a series of tests performed on a steel beam. The novel damage feature combined with the Fisher criterion for statistical evaluation has shown potential in effective structural damage detection.
Jebur, MN, Pradhan, B & Tehrany, MS 2015, 'Manifestation of LiDAR-Derived Parameters in the Spatial Prediction of Landslides Using Novel Ensemble Evidential Belief Functions and Support Vector Machine Models in GIS', IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 8, no. 2, pp. 674-690.
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Jebur, MN, Pradhan, B & Tehrany, MS 2015, 'Using ALOS PALSAR derived high-resolution DInSAR to detect slow-moving landslides in tropical forest: Cameron Highlands, Malaysia', Geomatics, Natural Hazards and Risk, vol. 6, no. 8, pp. 741-759.
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Jebur, MN, Pradhan, B, Shafri, HZM, Yusoff, ZM & Tehrany, MS 2015, 'An integrated user-friendly ArcMAP tool for bivariate statistical modelling in geoscience applications', Geoscientific Model Development, vol. 8, no. 3, pp. 881-891.
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Abstract. Modelling and classification difficulties are fundamental issues in natural hazard assessment. A geographic information system (GIS) is a domain that requires users to use various tools to perform different types of spatial modelling. Bivariate statistical analysis (BSA) assists in hazard modelling. To perform this analysis, several calculations are required and the user has to transfer data from one format to another. Most researchers perform these calculations manually by using Microsoft Excel or other programs. This process is time-consuming and carries a degree of uncertainty. The lack of proper tools to implement BSA in a GIS environment prompted this study. In this paper, a user-friendly tool, bivariate statistical modeler (BSM), for BSA technique is proposed. Three popular BSA techniques, such as frequency ratio, weight-of-evidence (WoE), and evidential belief function (EBF) models, are applied in the newly proposed ArcMAP tool. This tool is programmed in Python and created by a simple graphical user interface (GUI), which facilitates the improvement of model performance. The proposed tool implements BSA automatically, thus allowing numerous variables to be examined. To validate the capability and accuracy of this program, a pilot test area in Malaysia is selected and all three models are tested by using the proposed program. Area under curve (AUC) is used to measure the success rate and prediction rate. Results demonstrate that the proposed program executes BSA with reasonable accuracy. The proposed BSA tool can be used in numerous applications, such as natural hazard, mineral potential, hydrological, and other engineering and environmental applications.
Jeong, S & Vigneswaran, S 2015, 'Practical use of standard pore blocking index as an indicator of biofouling potential in seawater desalination', Desalination, vol. 365, pp. 8-14.
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Jeong, Y-S, Shyu, M-L, Xu, G & Wagner, RR 2015, 'Guest Editorial: Advanced Technologies and Services for Multimedia Big Data Processing', Multimedia Tools and Applications, vol. 74, no. 10, pp. 3413-3418.
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Ji, L-Y, Guo, YJ, Qin, P-Y, Gong, S-X & Mittra, R 2015, 'A Reconfigurable Partially Reflective Surface (PRS) Antenna for Beam Steering', IEEE Transactions on Antennas and Propagation, vol. 63, no. 6, pp. 2387-2395.
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The design of a novel partially reflective surface (PRS) antenna with the capability of beam steering is presented in this paper. The beam steering is realized by employing a reconfigurable PRS structure to achieve a changeable reflection phase as well as using a phased array as the source to excite the PRS antenna. A prototype antenna including the biasing network is fabricated and measured. It achieves a consistent beam steering from -15 degrees to 15 degrees with respect to the broadside direction across an overlapped frequency range from 5.5 to 5.7 GHz with measured realized gains over 12 dBi. Good agreement between the simulated and measured results for the input reflection coefficients and radiation patterns is achieved, which validates the feasibility of the design principle. Compared with other beam steering PRS antennas, the proposed one enables a larger beam steering angle with comparable gains, requires a simpler biasing network, and is more compact.
Jiang, H, Wang, J, Dong, Y & Lu, H 2015, 'Comprehensive assessment of wind resources and the low-carbon economy: An empirical study in the Alxa and Xilin Gol Leagues of inner Mongolia, China', Renewable and Sustainable Energy Reviews, vol. 50, pp. 1304-1319.
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© 2015 Elsevier Ltd. All rights reserved. Due to atmospheric pollution from fossil fuels, the reduction of wind turbine costs, and the rise of the low-carbon economy, wind energy conversion systems have become one of the most significant forms of new energy in China. Therefore, to reduce investment risk and maximize profits, it is necessary to assess wind resources before building large wind farms. This paper develops a comprehensive system containing four steps to evaluate the potential of wind resources at two sites in Xilin Gol League and at additional two sites in Alxa League of Inner Mongolia, China: (1) By calculating the total scores of three indexes, including the effective wind power density (EWPD), wind available time (WAT) and population density (PD), an indexes method is applied to assess the theoretical wind energy potential from 2001 to 2010. (2) To judge the fluctuations in the wind speed, the Fisher optimal partition method and the Jonckheere-Terpstra test are used to analyze the changes in the average monthly and yearly wind speeds from 2001 to 2010. (3) Three probability density functions, i.e., Weibull, Gamma and Lognormal, are used to assess the wind speed frequency distribution in 2010. To enhance the evaluation accuracy, three intelligent optimization parameter estimation algorithms, i.e., the particle swarm optimization algorithm (PSO), differential evolution algorithm (DE) and ant colony algorithm (ACO), are used to estimate the parameters of these distributions. (4) It is helpful to analyze the wind characteristics when assessing wind resources and selecting wind turbines. Therefore, the optimal frequency distribution based on the best parameter estimation method can be chosen to calculate the wind power density, the most probable wind speed and the wind speed carrying the maximum energy. The experimental results show that Site 1 and Site 4 are more suitable for large wind farms than Site 2 or Site 3.
Jiang, J, Wen, S, Yu, S, Xiang, Y & Zhou, W 2015, 'K-Center: An Approach on the Multi-Source Identification of Information Diffusion', IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY, vol. 10, no. 12, pp. 2616-2626.
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Jiang, P, Ma, X & Liu, F 2015, 'A New Hybrid Model Based on Data Preprocessing and an Intelligent Optimization Algorithm for Electrical Power System Forecasting', Mathematical Problems in Engineering, vol. 2015, pp. 1-17.
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The establishment of electrical power system cannot only benefit the reasonable distribution and management in energy resources, but also satisfy the increasing demand for electricity. The electrical power system construction is often a pivotal part in the national and regional economic development plan. This paper constructs a hybrid model, known as the E-MFA-BP model, that can forecast indices in the electrical power system, including wind speed, electrical load, and electricity price. Firstly, the ensemble empirical mode decomposition can be applied to eliminate the noise of original time series data. After data preprocessing, the back propagation neural network model is applied to carry out the forecasting. Owing to the instability of its structure, the modified firefly algorithm is employed to optimize the weight and threshold values of back propagation to obtain a hybrid model with higher forecasting quality. Three experiments are carried out to verify the effectiveness of the model. Through comparison with other traditional well-known forecasting models, and models optimized by other optimization algorithms, the experimental results demonstrate that the hybrid model has the best forecasting performance.
Jiang, X, Wang, J, Li, Y, Li, J & Yao, J 2015, 'Energy harvesting for powering wireless sensor networks in low-frequency and large-force environments', Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, vol. 229, no. 11, pp. 1953-1964.
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Over the past few decades, wireless sensor networks have been widely used in the field of structure health monitoring of civil, mechanical, and aerospace systems. Currently, most wireless sensor networks are battery powered and it is costly and unsustainable for maintenance because of the requirement for frequent battery replacements. As an attempt to address such issue, this paper theoretically and experimentally studies a compression-based piezoelectric energy harvester, which is suitable for the low-frequency and large-force working environments, such as in civil and transportation infrastructure applications. The proposed energy harvester employs the piezoelectric structure constructed in multilayer stack configuration to convert ambient vibrations into electrical energy. Based on the linear theory of piezoelectricity, the two-degree-of-freedom electromechanical models of the proposed energy harvester were developed to characterize its performance in generating electrical energy under external excitations. Exact closed-form expressions of the electromechanical models have been derived to analyze the maximum harvested power and the optimal resistance. The theoretical analyses were validated through several experiments for a test prototype under harmonic excitations. The test results exhibit very good agreement with the analytical analyses and numerical simulations for a range of resistive loads and input excitation levels.
Jiang, Y, Tsai, P, Hao, Z & Cao, L 2015, 'Automatic multilevel thresholding for image segmentation using stratified sampling and Tabu Search', Soft Computing, vol. 19, no. 9, pp. 2605-2617.
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Image segmentation techniques have been widely applied in many fields such as pattern recognition and feature extraction. For the primate visual attention model, the perceptual organization is an important process to automatically extract the desirable features. In this article, we propose a new method called an automatic multilevel thresholding algorithm using the stratified sampling and Tabu Search (AMTSSTS) by imitating the primate visual perceptual behaviors. In the AMTSSTS algorithm, a gray image is treated as a population with the gray values of pixels as the individuals. First, the image is evenly divided into several strata (blocks), and a sample is drawn from each stratum. Second, a Tabu Search-based optimization is applied to each sample to maximize the ratio between mean and variance for each sample. The threshold number and threshold values are preliminarily determined based on the optimized samples, and are further optimized by a deterministic method which includes a new local criterion function with property of local continuity of an image. Results of extensive simulations on Berkeley datasets indicate that AMTSSTS can obtain more effective, efficient and smooth segmentation, and can be applied to complex and real-time environments. © 2014 Springer-Verlag Berlin Heidelberg.
Jiang, Z, Tijing, LD, Amarjargal, A, Park, CH, An, K-J, Shon, HK & Kim, CS 2015, 'Removal of oil from water using magnetic bicomponent composite nanofibers fabricated by electrospinning', Composites Part B: Engineering, vol. 77, pp. 311-318.
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Jin, D, Gabrys, B & Dang, J 2015, 'Combined node and link partitions method for finding overlapping communities in complex networks', Scientific Reports, vol. 5, no. 1.
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AbstractCommunity detection in complex networks is a fundamental data analysis task in various domains and how to effectively find overlapping communities in real applications is still a challenge. In this work, we propose a new unified model and method for finding the best overlapping communities on the basis of the associated node and link partitions derived from the same framework. Specifically, we first describe a unified model that accommodates node and link communities (partitions) together and then present a nonnegative matrix factorization method to learn the parameters of the model. Thereafter, we infer the overlapping communities based on the derived node and link communities, i.e., determine each overlapped community between the corresponding node and link community with a greedy optimization of a local community function conductance. Finally, we introduce a model selection method based on consensus clustering to determine the number of communities. We have evaluated our method on both synthetic and real-world networks with ground-truths and compared it with seven state-of-the-art methods. The experimental results demonstrate the superior performance of our method over the competing ones in detecting overlapping communities for all analysed data sets. Improved performance is particularly pronounced in cases of more complicated networked community structures.
Jin, P, Wang, X, Wang, X, Ngo, HH & Jin, X 2015, 'A new step aeration approach towards the improvement of nitrogen removal in a full scale Carrousel oxidation ditch', Bioresource Technology, vol. 198, pp. 23-30.
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Jing, D, Bhadri, VA, Beck, D, Thoms, JAI, Yakob, NA, Wong, JWH, Knezevic, K, Pimanda, JE & Lock, RB 2015, 'Opposing regulation of BIM and BCL2 controls glucocorticoid-induced apoptosis of pediatric acute lymphoblastic leukemia cells', BLOOD, vol. 125, no. 2, pp. 273-283.
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Jing, T, Ramji, R, Warkiani, ME, Han, J, Lim, CT & Chen, C-H 2015, 'Jetting microfluidics with size-sorting capability for single-cell protease detection', Biosensors and Bioelectronics, vol. 66, pp. 19-23.
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Johnston, A 2015, 'Conversational Interaction in Interactive Dance Works', Leonardo, vol. 48, no. 3, pp. 296-297.
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This paper describes an interactive dance/physical theatre work entitled Encoded, which made use of motion capture techniques and real-time fluid simulations to create systems intended to support, stimulate and augment live performance. Preliminary findings from a qualitative study of performers’ experiences with the system raise a number of issues, including the challenges of creating theatrical meaning with interactive systems, using Contact Improvisation as a metaphor for engaging creative systems, and the impact that large-scale projections can have on performers’ engagement.
Jonáš, A, McGloin, D & Kiraz, A 2015, 'Droplet Lasers', Optics and Photonics News, vol. 26, no. 5, pp. 36-36.
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Junankar, S, Baker, LA, Roden, DL, Nair, R, Elsworth, B, Gallego-Ortega, D, Lacaze, P, Cazet, A, Nikolic, I, Teo, WS, Yang, J, McFarland, A, Harvey, K, Naylor, MJ, Lakhani, SR, Simpson, PT, Raghavendra, A, Saunus, J, Madore, J, Kaplan, W, Ormandy, C, Millar, EKA, O’Toole, S, Yun, K & Swarbrick, A 2015, 'ID4 controls mammary stem cells and marks breast cancers with a stem cell-like phenotype', Nature Communications, vol. 6, no. 1.
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Kamaleswaran, R, Wehbe, RR, Edward Pugh, J, Nacke, L, McGregor, C & James, A 2015, 'Collaborative multi-touch clinical handover system for the neonatal intensive care unit', Electronic Journal of Health Informatics, vol. 9, no. 1.
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Background: A critically ill infant admitted to a neonatal intensive care unit requires complex, critical, and coordinated care performed by multidisciplinary healthcare teams. Since the infant's care is not provided by a single, individual physician during the infant's hospital stay, clinical handover is essential to enable the transfer of health information between physicians involved in the infant's care. Objective: Handover at present is largely conducted in an informal and ad hoc way. A study of clinical handover is required to inform the development of automated intelligent systems that facilitate communication and collaboration between critical care health providers. Methods: A qualitative study in a quaternary neonatal intensive care unit, at The Hospital for Sick Children was undertaken to understand clinical handover and derive usability requirements. This is then used to inform a high level design of a multi-touch tabletop application for handover the design was then evaluated against senior neonatologists and neonatal fellows using rapid prototyping methods. Results: The results of the qualitative study showed that an effective handover application should at minimum include: tight integration with workflow and the physical environment, intuitive and simplicity, and minimalistic design following the 'less is more' philosophy. Conclusion: There is a need to optimize handover such that the information transferred is standardized, and the loss of information and/or misinformation is minimized. We argue that natural user interface design employed in the proposed design will result in improved care and less information loss during clinical handover.
Karim, MR, Rahman, BMA, Azabi, YO, Agrawal, A & Agrawal, GP 2015, 'Ultrabroadband mid-infrared supercontinuum generation through dispersion engineering of chalcogenide microstructured fibers', JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, vol. 32, no. 11, pp. 2343-2351.
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Karimi, F & Khalilpour, R 2015, 'Evolution of carbon capture and storage research: Trends of international collaborations and knowledge maps', International Journal of Greenhouse Gas Control, vol. 37, pp. 362-376.
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Karimi, F, Poo, DCC & Tan, YM 2015, 'Clinical information systems end user satisfaction: The expectations and needs congruencies effects', Journal of Biomedical Informatics, vol. 53, pp. 342-354.
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Karmokar, DK, Esselle, KP & Bird, TS 2015, 'An Array of Half-Width Microstrip Leaky-Wave Antennas Radiating on Boresight', IEEE Antennas and Wireless Propagation Letters, vol. 14, pp. 112-114.
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Karunanithi, R, Szogi, AA, Bolan, N, Naidu, R, Loganathan, P, Hunt, PG, Vanotti, MB, Saint, CP, Ok, YS & Krishnamoorthy, S 2015, 'Phosphorus Recovery and Reuse from Waste Streams', Advances in Agronomy, vol. 131, pp. 173-250.
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Phosphorus (P) is a macronutrient essential for all living organisms. Regrettably, it is a finite resource since phosphate rock (PR) is the main material used for production of P fertilizers. Globally, the demand for quality PR is escalating due to many factors including increasing human population. Inevitably, the demand for PR will exceed its supply capacity. This condition will be very difficult to manage as living systems have no alternative for P. Moreover, P use efficiency is low; only 15-20% of applied P is used by crops and animals. Globally, the remaining P is shunted into various waste streams. These waste streams include large quantities of effluents rich in P from both municipal and industrial wastewater treatment systems and manure from livestock production. The P present in these waste streams poses a threat to the environment by nutrient enrichment resulting in serious ecological issues such as eutrophication of waterways. However, P in these waste streams, if economically recovered, can contribute to a sustainable management of P resources. This review covers the following aspects: global importance of P as an essential nutrient; efficient and sustainable utilization of P; waste stream production, their suitability for P recovery, and limitations; current and emerging technologies for recovery of P; and the use of recovered P material. Finally, future research needs are identified associated with P recovery from waste streams and reuse in agriculture.
Kassir, A, Fitch, R & Sukkarieh, S 2015, 'Communication-aware information gathering with dynamic information flow', INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH, vol. 34, no. 2, pp. 173-200.
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Katz, A, McDonagh, A, Tijing, L & Shon, HK 2015, 'Fouling and Inactivation of Titanium Dioxide-Based Photocatalytic Systems', Critical Reviews in Environmental Science and Technology, vol. 45, no. 17, pp. 1880-1915.
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Titanium dioxide is an effective photocatalyst for the breakdown of many environmental contaminants. The complex mixtures that can occur in water matrices can significantly affect the breakdown of the contaminants in water by titanium dioxide (TiO2). The authors discuss a wide variety of foulants and inhibitors of photocatalytic TiO2 systems and review different methods that can be effective for their fouling prevention. Approaches to regenerate a fouled or contaminated TiO2 catalysts are explored and the effect of substrates on immobilized titanium dioxide is also reviewed.
Keam, S & Hutvagner, G 2015, 'tRNA-Derived Fragments (tRFs): Emerging New Roles for an Ancient RNA in the Regulation of Gene Expression', Life, vol. 5, no. 4, pp. 1638-1651.
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This review will summarise the recent discoveries and current state of research on short noncoding RNAs derived from tRNAs-known as tRNA-derived fragments (tRFs). It will describe the features of the known subtypes of these RNAs; including sequence characteristics, protein interactors, expression characteristics, biogenesis, and similarity to canonical miRNA pathways. Also their role in regulating gene expression; including mediating translational suppression, will be discussed. We also highlight their potential use as biomarkers, functions in gene regulation and links to disease. Finally, this review will speculate as to the origin and rationale for the conservation of this novel class of noncoding RNAs amongst both prokaryotes and eukaryotes.
Kedziora, DJ, Ankiewicz, A, Chowdury, A & Akhmediev, N 2015, 'Integrable equations of the infinite nonlinear Schrödinger equation hierarchy with time variable coefficients', Chaos: An Interdisciplinary Journal of Nonlinear Science, vol. 25, no. 10, pp. 103114-103114.
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We present an infinite nonlinear Schrödinger equation hierarchy of integrable equations, together with the recurrence relations defining it. To demonstrate integrability, we present the Lax pairs for the whole hierarchy, specify its Darboux transformations and provide several examples of solutions. These resulting wavefunctions are given in exact analytical form. We then show that the Lax pair and Darboux transformation formalisms still apply in this scheme when the coefficients in the hierarchy depend on the propagation variable (e.g., time). This extension thus allows for the construction of complicated solutions within a greatly diversified domain of generalised nonlinear systems.
Keepanasseril, A, Bagga, R, Saha, SC, Dey, P, Gainder, S & Dhaliwal, LK 2015, 'Primary fallopian tube transitional cell carcinoma', Journal of Obstetrics and Gynaecology, vol. 35, no. 3, pp. 324-325.
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Kehrel, U & Sick, N 2015, 'Oil prices as a driving force in the diffusion of renewables?', International Journal of Energy Sector Management, vol. 9, no. 2, pp. 227-250.
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Purpose
– Researchers began investigating the diffusion of renewable energy technologies (RETs) in the late 1990s, and, up to today, a variety of authors have presented different approaches to understand the special characteristics of RET diffusion. However, one factor has been thus far disregarded in the research: the influence of raw material prices on RET diffusion. The dependence of a multitude of technologies on raw material prices became especially apparent in recent years due to rather sudden and volatile price movements in raw material markets. Thus, the aim of this work is to contribute to the research by providing evidence for a direct linkage between raw material price developments and RET diffusion.
Design/methodology/approach
– A theoretical framework used in this article derives from the concept of induced diffusion. This empirical study is based on publicly available data of 18 Organisation for Economic Co-operation and Development (OECD) countries over 20 years and uses multivariate regression analysis to identify the corresponding diffusion models for selected established and emerging RETs.
Findings
– Results reveal that crude oil prices play a crucial role in the diffusion of emerging RETs. In addition, a joint reflection of induced diffusion and path dependencies as the theoretical foundation of RET diffusion models might be reasonable.
Originality/value
– This paper makes a significant co...
Kelly, A 2015, 'Intimacy and emotional labour in academic development', International Journal for Academic Development, vol. 20, no. 1, pp. 93-104.
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The affective dimensions of intimacy and emotional labour in academic development are explored utilising two methodological resources: autoethnography and narrative practice. An excerpt from the author’s reflective professional journal infused with affect and emotion is analysed utilising theories of intimacy in modernity, emotion work, and professional intimacy. The journal excerpt is ‘restoried’ to produce narrative lines that provide insight into the journal entry. The article concludes by proposing a ‘pedagogy of intimacy’ as an analytical space that values both skill and care.
Kelly, R & Sheng, D 2015, 'Numerical evaluation of clay disturbance during blade penetration in the flat dilatometer test', Géotechnique Letters, vol. 5, no. July–September, pp. 91-95.
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Kemp, M & Xu, RYD 2015, 'Geometrically-constrained balloon fitting for multiple connected ellipses', Pattern Recognition, vol. 48, no. 7, pp. 2198-2208.
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Kennedy, MJ, Gandomi, AH & Miller, CM 2015, 'Coagulation modeling using artificial neural networks to predict both turbidity and DOM-PARAFAC component removal', Journal of Environmental Chemical Engineering, vol. 3, no. 4, pp. 2829-2838.
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© 2015 Elsevier Ltd. In this study, four different neural network models were evaluated for predicting both turbidity and dissolved organic matter (DOM) removal during the coagulation process at the Akron Water Treatment Plant (Akron, Ohio, USA). DOM was monitored and characterized using fluorescence spectroscopy and parallel factor (PARAFAC) analysis, building upon previous research which identified three unique fluorescence components (C1, C2, and C3). Neural network models were built using operational data to predict each of the fluorescence components and turbidity after coagulation based on variable raw water quality and chemical doses. Correlation coefficients between measured and model predicted values for the final turbidity, C1, C2, and C3 models on an unseen test data set were 0.91, 0.95, 0.97, and 0.51, respectively. The predictive capability of the top performing model for each parameter was evaluated using parametric analysis, external validation criteria, and the absolute relative error distribution. Results suggest that the models for settled turbidity and the three settled component scores are valid and can be used to predict the removal of individual fractions of DOM (as measured by PARAFAC components) as a function of chemical dose and raw water quality, providing the water plant the ability to simultaneously manage two key water quality treatment objectives.
Khabbaz, H 2015, 'ANCHORED WALL DESIGN: COMPARING THE GLOBAL AND PARTIAL FACTORS OF SAFETY INCORPORATING THE AUSTRALIAN STANDARDS', International Journal of Geomate, vol. 9, no. 1, pp. 1395-1402.
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© 2015, International Journal of GEOMATE. A versatile and user-friendly model has been developed for evaluating the factor of safety of anchored sheet-pile structures, using both global factors of safety (GFS) and partial factors of safety (PFS) methods, abiding AS 4678 standard, an Australian standard for retaining wall design. The developed model is aimed to determine the following features: (i) depth of embedment, (ii) total wall height for determining the amount of material required, (iii) the length of anchor, (iv) the anchor force and (v) the maximum moment acting on the sheet-pile wall. Key findings are highlighted based on the design calculations. This study incorporates different design scenarios including layered soil, line loads and uniformly distributed surcharge loads to draw comparisons between the GFS and PFS methods. Many examples are used to validate the outputs of the program. The results indicate that the PFS method is preferred for design strength and safety aspects, whereas the GFS method is adopted for cost effectiveness and simplicity of design calculations. The limitations of the Australian standard AS 4678-2002 are discussed in order to identify the superiority of one method over another.
Khalilpour, R & Vassallo, A 2015, 'Leaving the grid: An ambition or a real choice?', Energy Policy, vol. 82, pp. 207-221.
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Khalilpour, R, Mumford, K, Zhai, H, Abbas, A, Stevens, G & Rubin, ES 2015, 'Membrane-based carbon capture from flue gas: a review', Journal of Cleaner Production, vol. 103, pp. 286-300.
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Khan, MH, Huang, Z, Xiao, F, Casillas, G, Chen, Z, Molino, PJ & Liu, HK 2015, 'Erratum: Synthesis of Large and Few Atomic Layers of Hexagonal Boron Nitride on Melted Copper', Scientific Reports, vol. 5, no. 1.
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Khan, MH, Huang, Z, Xiao, F, Casillas, G, Chen, Z, Molino, PJ & Liu, HK 2015, 'Synthesis of Large and Few Atomic Layers of Hexagonal Boron Nitride on Melted Copper', Scientific Reports, vol. 5, no. 1.
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Khan, MI & kamal, MS 2015, 'Performance evaluation of Warshall algorithm and dynamic programming for Markov chain in local sequence alignment', Interdisciplinary Sciences: Computational Life Sciences, vol. 7, no. 1, pp. 78-81.
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Khazaei, H, McGregor, C, Eklund, JM & El-Khatib, K 2015, 'Real-Time and Retrospective Health-Analytics-as-a-Service: A Novel Framework', JMIR Medical Informatics, vol. 3, no. 4, pp. e36-e36.
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Background: Analytics-as-a-service (AaaS) is one of the latest provisions emerging from the cloud services family. Utilizing this paradigm of computing in health informatics will benefit patients, care providers, and governments significantly. This work is a novel approach to realize health analytics as services in critical care units in particular. Objective: To design, implement, evaluate, and deploy an extendable big-data compatible framework for health-analytics-as-a-service that offers both real-time and retrospective analysis. Methods: We present a novel framework that can realize health data analytics-as-a-service. The framework is flexible and configurable for different scenarios by utilizing the latest technologies and best practices for data acquisition, transformation, storage, analytics, knowledge extraction, and visualization. We have instantiated the proposed method, through the Artemis project, that is, a customization of the framework for live monitoring and retrospective research on premature babies and ill term infants in neonatal intensive care units (NICUs). Results: We demonstrated the proposed framework in this paper for monitoring NICUs and refer to it as the Artemis-In-Cloud (Artemis-IC) project. A pilot of Artemis has been deployed in the SickKids hospital NICU. By infusing the output of this pilot set up to an analytical model, we predict important performance measures for the final deployment of Artemis-IC. This process can be carried out for other hospitals following the same steps with minimal effort. SickKids' NICU has 36 beds and can classify the patients generally into 5 different types including surgical and premature babies. The arrival rate is estimated as 4.5 patients per day, and the average length of stay was calculated as 16 days. Mean number of medical monitoring algorithms per patient is 9, which renders 311 live algorithms for the whole NICU running on the framework. The memory and computation power required for Artemis-I...
Khazaei, H, Mench-Bressan, N, McGregor, C & Pugh, JE 2015, 'Health Informatics for Neonatal Intensive Care Units: An Analytical Modeling Perspective', IEEE Journal of Translational Engineering in Health and Medicine, vol. 3, pp. 1-9.
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The effective use of data within intensive care units (ICUs) has great potential to create new cloud-based health analytics solutions for disease prevention or earlier condition onset detection. The Artemis project aims to achieve the above goals in the area of neonatal ICUs (NICU). In this paper, we proposed an analytical model for the Artemis cloud project which will be deployed at McMaster Children's Hospital in Hamilton. We collect not only physiological data but also the infusion pumps data that are attached to NICU beds. Using the proposed analytical model, we predict the amount of storage, memory, and computation power required for the system. Capacity planning and tradeoff analysis would be more accurate and systematic by applying the proposed analytical model in this paper. Numerical results are obtained using real inputs acquired from McMaster Children's Hospital and a pilot deployment of the system at The Hospital for Sick Children (SickKids) in Toronto.
Khezri, N, Mohamad, H, HajiHassani, M & Fatahi, B 2015, 'The stability of shallow circular tunnels in soil considering variations in cohesion with depth', Tunnelling and Underground Space Technology, vol. 49, pp. 230-240.
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Khodasevych, IE, Wang, L, Mitchell, A & Rosengarten, G 2015, 'Micro- and Nanostructured Surfaces for Selective Solar Absorption', Advanced Optical Materials, vol. 3, no. 7, pp. 852-881.
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Khoo, BL, Lee, SC, Kumar, P, Tan, TZ, Warkiani, ME, Ow, SGW, Nandi, S, Lim, CT & Thiery, JP 2015, 'Short-term expansion of breast circulating cancer cells predicts response to anti-cancer therapy', Oncotarget, vol. 6, no. 17, pp. 15578-15593.
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Khorsandnia, N & Crews, K 2015, 'Application of Quasi-Brittle Material Model for Analysis of Timber Members', Australian Journal of Structural Engineering, vol. 16, no. 2, pp. 99-115.
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Khorsandnia, N & Crews, K 2015, 'Application of quasi-brittle material model for analysis of timber members', Australian Journal of Structural Engineering, vol. 16, no. 2, pp. 99-115.
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Khorsandnia, N, Schänzlin, J, Valipour, H & Crews, K 2015, 'Coupled finite element-finite difference formulation for long-term analysis of timber–concrete composite structures', Engineering Structures, vol. 96, pp. 139-152.
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Khoury, S & Tran, N 2015, 'Circulating microRNAs: potential biomarkers for common malignancies', Biomarkers in Medicine, vol. 9, no. 2, pp. 131-151.
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MicroRNAs (miRNAs) belong to a class of small noncoding RNAs (ncRNAs), which regulate gene expression at the post-transcriptional level. They are approximately 22 nucleotide sequences in length and have been predicted to control expression of up to 30–60% of all protein-coding genes in mammals. Considering this wide involvement in gene control, aberrant miRNA expression has a strong association with the presence and progression of a disease, hence generating much anticipation in using miRNAs as biomarkers for the diagnosis and prognosis of human cancers. The majority of these miRNAs are intracellular, but recently they have been discovered in bodily fluids. This review will provide an insight into these circulatory miRNA molecules and discuss their potential as cancer biomarkers.
Khruahong, S, Kong, X & Hoang, D 2015, 'Ontology Design for Thailand Travel Industry', International Journal of Knowledge Engineering, vol. 1, no. 3, pp. 191-196.
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Tourism industry plays a crucial role in the economics growth in countries of South East Asia and hence the demand for rich local tourist information for visitors. In these countries, there are unique deciding impact factors to visitor journey such as constraints in culture, laws, and festivals. Such special information has not been available or implemented in general search engines so far. In this paper, we design an ontology for Thai travel industry to support an intelligent finding of these local events and their constraints using semantic web. The primary contribution of this paper is a new approach to design ontology for Thailand travel industry on both general information and specific dynamic local information using Domain Ontology Graph (DOG) and location based services. As a result, this ontology design will be applied to an intelligent searching for making decision of tourists. This ontology design will be used in semantic tourism applications in the future.
Kianfar, K, Indraratna, B, Rujikiatkamjorn, C & Leroueil, S 2015, 'Radial consolidation response upon the application and removal of vacuum and fill loading', CANADIAN GEOTECHNICAL JOURNAL, vol. 52, no. 12, pp. 2156-2162.
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Kim, DI, Kim, J, Shon, HK & Hong, S 2015, 'Pressure retarded osmosis (PRO) for integrating seawater desalination and wastewater reclamation: Energy consumption and fouling', Journal of Membrane Science, vol. 483, pp. 34-41.
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Kim, J, Jeong, K, Park, M, Shon, H & Kim, J 2015, 'Recent Advances in Osmotic Energy Generation via Pressure-Retarded Osmosis (PRO): A Review', Energies, vol. 8, no. 10, pp. 11821-11845.
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Kim, JE, Phuntsho, S, Lotfi, F & Shon, HK 2015, 'Investigation of pilot-scale 8040 FO membrane module under different operating conditions for brackish water desalination', DESALINATION AND WATER TREATMENT, vol. 53, no. 10, pp. 2782-2791.
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Two spiral wound forward osmosis membrane modules with different spacer designs (corrugated spacer [CS] and medium spacer [MS]) were investigated for the fertilizer-drawn forward osmosis (FO) desalination of brackish groundwater (BGW) at a pilot-scale level. This study mainly focused on examining the influence of various operating conditions such as feed flow rate, total dissolved solids (TDS) concentration of the BGW feed, and draw solution (DS) concentrations using ammonium sulfate ((NH4)2SO4, SOA) on the performance of two membrane modules. The feed flow rate played a positive role in the average water flux of the pilot-scale FO membrane module due to enhanced mass transfer coefficient across the membrane surface. Feed TDS and DS concentrations also played a significant role in both FO membrane modules because they are directly related to the osmotic driving force and membrane fouling tendency. CS module performed slightly better than MS module during all experiments due to probably enhanced mass transfer and lower fouling propensity associated with the CS. Besides, CS spacer provides larger channel space that can accommodate larger volumes of DS, and hence, could maintain higher DS concentration. However, the extent of dilution for the CS module is slightly lower.
Kim, Y, Lee, S, Shon, HK & Hong, S 2015, 'Organic fouling mechanisms in forward osmosis membrane process under elevated feed and draw solution temperatures', Desalination, vol. 355, pp. 169-177.
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Kitwitee, P, Limwattananon, S, Limwattananon, C, Waleekachonlert, O, Ratanachotpanich, T, Phimphilai, M, Nguyen, TV & Pongchaiyakul, C 2015, 'Metformin for the treatment of gestational diabetes: An updated meta-analysis', Diabetes Research and Clinical Practice, vol. 109, no. 3, pp. 521-532.
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Klein, MT, Kalam, M, Trout, K, Fowler, N & Terry, M 2015, 'Mescaline Concentrations in Three Principal Tissues ofLophophora williamsii(Cactaceae): Implications for Sustainable Harvesting Practices', Haseltonia, vol. 20, pp. 34-42.
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Kong, J-J, Yue, Q-Y, Zhao, P, Gao, B-Y, Li, Q, Wang, Y, Ngo, HH & Guo, W-S 2015, 'Comparative study on microstructure and surface properties of keratin- and lignocellulosic-based activated carbons', Fuel Processing Technology, vol. 140, pp. 67-75.
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Kong, Y, Zhang, M & Ye, D 2015, 'A negotiation-based method for task allocation with time constraints in open grid environments', Concurrency and Computation: Practice and Experience, vol. 27, no. 3, pp. 735-761.
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Kong, Y, Zhang, M, Ye, D & Luo, X 2015, 'RETRACTED CHAPTER: A Negotiation Method for Task Allocation with Time Constraints in Open Grid Environments', Studies in Computational Intelligence, vol. 596, pp. 19-36.
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Konthesingha, KMC, Stewart, MG, Ryan, P, Ginger, J & Henderson, D 2015, 'Reliability based vulnerability modelling of metal-clad industrial buildings to extreme wind loading for cyclonic regions', Journal of Wind Engineering and Industrial Aerodynamics, vol. 147, pp. 176-185.
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This paper presents an approach for developing a vulnerability model to predict the probability and extent of damage to metal-clad industrial buildings due to extreme wind loading. Structural reliability-based methods that describe the spatially distributed wind load and component/connection strengths probabilistically are used in the model. Two failure mechanisms are considered for the roof envelop, namely; failure of roof cladding, and purlin failure. Interdependency between the failure mechanisms, load sharing effects due to connection/component failure, and internal pressure variation due to roof cladding failure are also considered. The industrial building examined in the study is a hot rolled structural steel, metal-clad, gable-end building designed for cyclonic regions in Australia. The likelihood and extent of roof damage for this buildings is presented using wind vulnerability curves obtained from the probabilistic model. It is found that internal pressure (e.g. an open door) and the use of cyclone washers has a significant effect on wind vulnerability. The utilisation of cyclone washers is found to reduce damage risks by over 70%.
Kouretzis, GP, Ansari, Y, Pineda, J, Kelly, R & Sheng, D 2015, 'Numerical evaluation of clay disturbance during blade penetration in the flat dilatometer test', Géotechnique Letters, vol. 5, no. 3, pp. 91-95.
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This paper presents a study on the amplification of horizontal soil stresses during flat dilatometer test (DMT) blade penetration based on three-dimensional total and effective stress numerical analyses, while considering stress–flow coupling and large deformations. The focus here is on saturated clays, and the effect of soil stress history on the horizontal stress index is discussed in detail. The obtained results appear to be in good agreement with published and new field data, leading to the proposal of two new expressions for estimating the overconsolidation ratio and the earth pressure coefficient at rest directly from flat dilatometer tests in estuarine clays.
Krause, M, Dackermann, U & Li, J 2015, 'Elastic wave modes for the assessment of structural timber: ultrasonic echo for building elements and guided waves for pole and pile structures', Journal of Civil Structural Health Monitoring, vol. 5, no. 2, pp. 221-249.
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This paper presents the state-of-the-art of using non-destructive testing (NDT) methods based on elastic waves for the condition assessment of structural timber. Two very promising approaches based on the propagation and reflections of elastic waves are described. While the first approach uses ultrasonic echoes for the testing of wooden building elements, the second approach uses guided waves (GW) for the testing of timber pole and pile structures. The basic principle behind both approaches is that elastic waves induced in a timber structure will propagate through its material until they encounter a change in stiffness, cross-sectional area or density, at which point they will reflect back. By measuring the wave echoes, it is possible to determine geometric properties of the tested structures such as the back wall of timber elements or the underground length of timber poles or piles. In addition, the internal state of the tested structures can be assessed since damage and defects such as rot, fungi or termite attacks will cause early reflections of the elastic waves as well as it can result in changes in wave velocity, wave attenuation and wave mode conversion. In the paper, the principles and theory of using elastic wave propagation for the assessment of wooden building elements and timber pole/pile structures are described. The state-of-the-art in testing equipment and procedures is presented and detailed examples are given on the practical application of both testing approaches. Recent encouraging developments of cutting edge research are presented along with challenges for future research.
Kueng, R & Ferrie, C 2015, 'Near-optimal quantum tomography: estimators and bounds', New J. Phys., vol. 17, p. 123013.
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We give bounds on the average fidelity achievable by any quantum state
estimator, which is arguably the most prominently used figure of merit in
quantum state tomography. Moreover, these bounds can be computed online---that
is, while the experiment is running. We show numerically that these bounds are
quite tight for relevant distributions of density matrices. We also show that
the Bayesian mean estimator is ideal in the sense of performing close to the
bound without requiring optimization. Our results hold for all finite
dimensional quantum systems.
Kulkarni, R, Qiao, Y & Sun, X 2015, 'Any monotone property of 3-uniform hypergraphs is weakly evasive', Theoretical Computer Science, vol. 588, pp. 16-23.
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© 2014 Elsevier B.V. For a Boolean function f, let D(f) denote its deterministic decision tree complexity, i.e., minimum number of (adaptive) queries required in worst case in order to determine f. In a classic paper, Rivest and Vuillemin [11] show that any non-constant monotone property P:{0,1}(n2)→{0,1} of n-vertex graphs has D(P)=Ω(n2).We extend their result to 3-uniform hypergraphs. In particular, we show that any non-constant monotone property P:{0,1}(n3)→{0,1} of n-vertex 3-uniform hypergraphs has D(P)=Ω(n3).Our proof combines the combinatorial approach of Rivest and Vuillemin with the topological approach of Kahn, Saks, and Sturtevant [6] . Interestingly, our proof makes use of Vinogradov's Theorem (weak Goldbach Conjecture), inspired by its recent use by Babai et al. [1] in the context of the topological approach. Our work leaves the generalization to k-uniform hypergraphs as an intriguing open question.
Kunhikrishnan, A, Shon, HK, Bolan, NS, El Saliby, I & Vigneswaran, S 2015, 'Sources, Distribution, Environmental Fate, and Ecological Effects of Nanomaterials in Wastewater Streams', Critical Reviews in Environmental Science and Technology, vol. 45, no. 4, pp. 277-318.
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Engineered nanomaterials (ENM) are manufactured, as opposed to being an incidental by-product of combustion or a natural process, and they often have unique or novel properties that emerge from their small size. These materials are being used in an expanding array of consumer products and, like all technological developments, have both benefits and risks. As the use of ENM in consumer products becomes more common, the amount of these nanomaterials entering wastewater stream increases. Estimates of nanomaterials production are in the range of 500 and 50,000 tons per year for silver and titanium dioxide (TiO2) alone, respectively. Nanomaterials enter the wastewater stream during the production, usage, and disposal of nanomaterial-containing products. The predicted values of nanomaterials range from 0.003 (fullerenes) to 21 ng L−1 (nano-TiO2) for surface waters, and from 4 ng L−1 (fullerenes) to 4 μg L−1 (nano-TiO2) for sewage treatment effluents. Therefore, investigating the fate of nanomaterials in wastewater streams is critical for risk assessment and pollution control. The authors aim first to identify the sources of nanomaterials reaching wastewater streams, then determine their occurrence and distribution, and finally discuss their fate in relation to human and ecological health, and environmental impact.
Kurian, JC 2015, 'Facebook use by the open access repository users', Online Information Review, vol. 39, no. 7, pp. 903-922.
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Purpose
– The purpose of this paper is to explore the type and implications of user-generated content posted by users of an open access institutional repository (DSpace) on Facebook.
Design/methodology/approach
– The identified user-generated content was organised into three categories: personal; professional; and social information. It encompassed all content from the members of the “DSpace” Facebook group, posted during the seven-year period (2007-2014). The posts were read and analysed to identify and categorise user-generated content posted by users to determine how Facebook is used by open access repository users.
Findings
– The results of analysis demonstrate the importance of social information posted by users over personal and professional information. Major types of user-generated content posted by users in the social information category were request, greetings, status-update, and announcement. Further, there has been a threefold increase in the number of user postings in the last two years (2013-2014), when posts were analysed over a seven-year period.
Research limitations/implications
– This study contributes to the theory on the implications eventuating from user-generated content posted by users of an open access institutional repository. An analysis of user-generated content identified in this study implies that users of DSpace open access repository are primarily using Facebook for informatio...
Kwok, N, Shi, H, Fang, G, Ha, Q, Yu, Y-H, Wu, T, Li, H & Nguyen, T 2015, 'Color image enhancement using correlated intensity and saturation adjustments', JOURNAL OF MODERN OPTICS, vol. 62, no. 13, pp. 1037-1047.
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La Fontaine, A, Gault, B, Breen, A, Stephenson, L, Ceguerra, AV, Yang, L, Dinh Nguyen, T, Zhang, J, Young, DJ & Cairney, JM 2015, 'Interpreting atom probe data from chromium oxide scales', Ultramicroscopy, vol. 159, pp. 354-359.
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Lai, J, Dutkiewicz, E, Liu, RP & Vesilo, R 2015, 'Opportunistic Spectrum Access with Two Channel Sensing in Cognitive Radio Networks', IEEE Transactions on Mobile Computing, vol. 14, no. 1, pp. 126-138.
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Lai, Q, Paskevicius, M, Sheppard, DA, Buckley, CE, Thornton, AW, Hill, MR, Gu, Q, Mao, J, Huang, Z, Liu, HK, Guo, Z, Banerjee, A, Chakraborty, S, Ahuja, R & Aguey‐Zinsou, K 2015, 'Hydrogen Storage Materials for Mobile and Stationary Applications: Current State of the Art', ChemSusChem, vol. 8, no. 17, pp. 2789-2825.
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AbstractOne of the limitations to the widespread use of hydrogen as an energy carrier is its storage in a safe and compact form. Herein, recent developments in effective high‐capacity hydrogen storage materials are reviewed, with a special emphasis on light compounds, including those based on organic porous structures, boron, nitrogen, and aluminum. These elements and their related compounds hold the promise of high, reversible, and practical hydrogen storage capacity for mobile applications, including vehicles and portable power equipment, but also for the large scale and distributed storage of energy for stationary applications. Current understanding of the fundamental principles that govern the interaction of hydrogen with these light compounds is summarized, as well as basic strategies to meet practical targets of hydrogen uptake and release. The limitation of these strategies and current understanding is also discussed and new directions proposed.
Lam, HK, Ekong, U, Xiao, B, Ouyang, G, Liu, H, Chan, KY & Ling, SH 2015, 'Variable weight neural networks and their applications on material surface and epilepsy seizure phase classifications', NEUROCOMPUTING, vol. 149, pp. 1177-1187.
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Lambertz, I, Kumps, C, Claeys, S, Lindner, S, Beckers, A, Janssens, E, Carter, DR, Cazes, A, Cheung, BB, De Mariano, M, De Bondt, A, De Brouwer, S, Delattre, O, Gibbons, J, Janoueix-Lerosey, I, Laureys, G, Liang, C, Marchall, GM, Porcu, M, Takita, J, Trujillo, DC, Van Den Wyngaert, I, Van Roy, N, Van Goethem, A, Van Maerken, T, Zabrocki, P, Cools, J, Schulte, JH, Vialard, J, Speleman, F & De Preter, K 2015, 'Upregulation of MAPK Negative Feedback Regulators and RET in Mutant ALK Neuroblastoma: Implications for Targeted Treatment', Clinical Cancer Research, vol. 21, no. 14, pp. 3327-3339.
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Abstract
Purpose: Activating ALK mutations are present in almost 10% of primary neuroblastomas and mark patients for treatment with small-molecule ALK inhibitors in clinical trials. However, recent studies have shown that multiple mechanisms drive resistance to these molecular therapies. We anticipated that detailed mapping of the oncogenic ALK-driven signaling in neuroblastoma can aid to identify potential fragile nodes as additional targets for combination therapies.
Experimental Design: To achieve this goal, transcriptome profiling was performed in neuroblastoma cell lines with the ALKF1174L or ALKR1275Q hotspot mutations, ALK amplification, or wild-type ALK following pharmacologic inhibition of ALK using four different compounds. Next, we performed cross-species genomic analyses to identify commonly transcriptionally perturbed genes in MYCN/ALKF1174L double transgenic versus MYCN transgenic mouse tumors as compared with the mutant ALK-driven transcriptome in human neuroblastomas.
Results: A 77-gene ALK signature was established and successfully validated in primary neuroblastoma samples, in a neuroblastoma cell line with ALKF1174L and ALKR1275Q regulable overexpression constructs and in other ALKomas. In addition to the previously established PI3K/AKT/mTOR, MAPK/ERK, and MYC/MYCN signaling branches, we identified that mutant ALK drives a strong upregulation of MAPK negative feedback regulators and upregulates RET and RET-driven sympathetic neuronal markers of the cholinergic lineage.
Conclusions: We provide important novel insights into the transcriptional consequences and the complexity of mutant ALK signaling in this aggressive pediatric tumor. The negative feedback loop of MAPK pathway inhibitors may affect novel ALK inhibition therapies, whereas mutant ALK induced RET signaling can offer novel opportunities for te...
Lammers, T & Golfmann, J 2015, 'Modular Product Design: reducing complexity, increasing efficacy', Performance, vol. 7, no. 1, pp. 56-63.
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In a global business environment, the increased
individuality of customer demands adds external
pressure for companies. On the other hand,
growing competition creates the need for
cost-cutting programs. The conflict between
external variance and internal standardization
can be solved by approaches such as modular
product design. A proven four-phase approach
that enables the modularization of product
architectures is examined in this article.
Law, Y, Ye, L, Wang, Q, Hu, S, Pijuan, M & Yuan, Z 2015, 'Producing free nitrous acid – A green and renewable biocidal agent – From anaerobic digester liquor', Chemical Engineering Journal, vol. 259, pp. 62-69.
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Lawson, J, Rasul, MG, Howard, P, Martin, F, Hadgraft, R & Jarman, R 2015, 'Getting it right: The case for supervisors assessing process in capstone projects', International Journal of Engineering Education, vol. 31, no. 6, pp. 1810-1818.
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Capstone projects represent the culmination of an undergraduate engineering degree and are typically the last checkpoint measure before students graduate and enter the engineering profession. In Australia there is a longstanding interest in and commitment to developing quality capstone experiences.Anational study into the supervision and assessment of capstone projects has determined that whilst there is relative consistency in terms of what project tasks are set and assessed, there is not comparable consistency in how these tasks or assignments are marked. Two interconnected areas of assessing process and the role of the supervisor in marking are identified as contentious. This paper presents some findings of a national case study and concludes that whilst further investigation is warranted, assessing process as well as project products is valuable as is the need for greater acceptance of project supervisors as capable of making informed, professional judgments when marking significant project work.
Le Thi My, H, Nguyen Thanh, B & Khuat Thanh, T 2015, 'Survey on Mutation-based Test Data Generation', International Journal of Electrical and Computer Engineering (IJECE), vol. 5, no. 5, pp. 1164-1164.
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<span>The critical activity of testing is the systematic selection of suitable test cases, which be able to reveal highly the faults. Therefore, mutation coverage is an effective criterion for generating test data. Since the test data generation process is very labor intensive, time-consuming and error-prone when done manually, the automation of this process is highly aspired. The researches about automatic test data generation contributed a set of tools, approaches, development and empirical results. In this paper, we will analyse and conduct a comprehensive survey on generating test data based on mutation. The paper also analyses the trends in this field.</span>
Le, TM, Fatahi, B & Khabbaz, H 2015, 'Numerical optimisation to obtain elastic viscoplastic model parameters for soft clay', INTERNATIONAL JOURNAL OF PLASTICITY, vol. 65, pp. 1-21.
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Le, TM, Fatahi, B, Disfani, M & Khabbaz, H 2015, 'Analyzing consolidation data to obtain elastic viscoplastic parameters of clay', GEOMECHANICS AND ENGINEERING, vol. 8, no. 4, pp. 559-594.
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Lee, J-S, Filatova, T, Ligmann-Zielinska, A, Hassani-Mahmooei, B, Stonedahl, F, Lorscheid, I, Voinov, A, Polhill, G, Sun, Z & Parker, DC 2015, 'The Complexities of Agent-Based Modeling Output Analysis', Journal of Artificial Societies and Social Simulation, vol. 18, no. 4.
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Lee, Y-C, Liu, J, Chuang, Y-L, Hsieh, M-H & Lee, R-K 2015, 'Passive $\mathcal{PT}$-symmetric couplers without complex optical potentials', Phys. Rev. A, vol. 92, no. 5, pp. 053815-4.
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In addition to the implementation of parity-time ($\mathcal{PT}$)-symmetric
optical systems by carefully and actively controlling the gain and loss, we
show that a $2\times 2$ $\mathcal{PT}$-symmetric Hamiltonian has a unitarily
equivalent representation without complex optical potentials in the resulting
optical coupler. Through the Naimark dilation in operator algebra, passive
$\mathcal{PT}$-symmetric couplers can thus be implemented with a refractive
index of real values and asymmetric coupling coefficients. This opens up the
possibility to implement general $\mathcal{PT}$-symmetric systems with
state-of-the-art asymmetric slab waveguides, dissimilar optical fibers, or
cavities with chiral mirrors.
Lei, G, Liu, C, Guo, Y & Zhu, J 2015, 'Multidisciplinary Design Analysis and Optimization of a PM Transverse Flux Machine With Soft Magnetic Composite Core', IEEE Transactions on Magnetics, vol. 51, no. 11, pp. 1-4.
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Lei, G, Liu, C, Zhu, J & Guo, Y 2015, 'Techniques for Multilevel Design Optimization of Permanent Magnet Motors', IEEE Transactions on Energy Conversion, vol. 30, no. 4, pp. 1574-1584.
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Lei, G, Wang, T, Zhu, J, Guo, Y & Wang, S 2015, 'System-Level Design Optimization Method for Electrical Drive Systems—Robust Approach', IEEE Transactions on Industrial Electronics, vol. 62, no. 8, pp. 4702-4713.
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A system-level design optimization method under the framework of a deterministic approach was presented for electrical drive systems in our previous work, in which not only motors but also the integrated control schemes were designed and optimized to achieve good steady and dynamic performances. However, there are many unavoidable uncertainties (noise factors) in the industrial manufacturing process, such as material characteristics and manufacturing precision. These will result in big fluctuations for the product's reliability and quality in mass production, which are not investigated in the deterministic approach. Therefore, a robust approach based on the technique of design for six sigma is presented for the system-level design optimization of drive systems to improve the reliability and quality of products in batch production in this work. Meanwhile, two system-level optimization frameworks are presented for the proposed method, namely, single-level (only at the system level) and multilevel frameworks. Finally, a drive system is investigated as an example, and detailed results are presented and discussed. It can be found that the reliability and quality levels of the investigated drive system have been greatly increased by using the proposed robust approach.
Lemke, C, Budka, M & Gabrys, B 2015, 'Metalearning: a survey of trends and technologies', Artificial Intelligence Review, vol. 44, no. 1, pp. 117-130.
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Leung, D & Yu, N 2015, 'Maximum privacy without coherence, zero-error', Journal of Mathematical Physics, vol. 57, no. 9, p. 092202.
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We study the possible difference between the quantum and the private
capacities of a quantum channel in the zero-error setting. For a family of
channels introduced by arXiv:1312.4989, we demonstrate an extreme difference:
the zero-error quantum capacity is zero, whereas the zero-error private
capacity is maximum given the quantum output dimension.
Leyendekkers, JV & Shannon, AG 2015, 'The odd-number sequence: squares and sums', International Journal of Mathematical Education in Science and Technology, vol. 46, no. 8, pp. 1222-1228.
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Li, B, Guo, T, Zhu, X & Li, Z 2015, 'Reverse twin plant for efficient diagnosability testing and optimizing', Engineering Applications of Artificial Intelligence, vol. 38, pp. 131-137.
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Li, B, Ye, L, Li, Z, Ma, Z & Kalhori, H 2015, 'Quantitative identification of delamination at different interfaces using guided wave signals in composite laminates', Journal of Reinforced Plastics and Composites, vol. 34, no. 18, pp. 1506-1525.
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This article presents the development of a quantitative method for identifying interfacial delamination in composite laminates. Splitting and merging occur as Lamb waves pass through the delamination. It is demonstrated from the dispersion curve of Lamb waves that the group velocities of A0 and S0 modes in the sub-laminates above and below the delamination area are different when the delamination interface is not at the thickness center of a symmetrical layup laminate. Changes in the time of flight (ToF) of A0 and S0 modes are caused by the parallel propagation of Lamb waves. Based on those changes in the ToF, delamination size can be evaluated even though the delamination location through the thickness is not pregiven. Numerical and experimental studies are conducted to assess this method. Continuous wavelet transform is applied to extract the ToF of A0 mode waves from the overlapped signals. Mode conversion is illustrated for the interaction of Lamb waves and delamination. The sensitivity and applicability of the proposed method are validated numerically and experimentally in two asymmetric layup composite laminates. The limitation of this method for symmetric layup composite laminates is analyzed and a potential improvement approach is further discussed.
Li, G, Yan, Z & Wang, J 2015, 'A one-layer recurrent neural network for constrained nonconvex optimization', Neural Networks, vol. 61, pp. 10-21.
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In this paper, a one-layer recurrent neural network is proposed for solving nonconvex optimization problems subject to general inequality constraints, designed based on an exact penalty function method. It is proved herein that any neuron state of the proposed neural network is convergent to the feasible region in finite time and stays there thereafter, provided that the penalty parameter is sufficiently large. The lower bounds of the penalty parameter and convergence time are also estimated. In addition, any neural state of the proposed neural network is convergent to its equilibrium point set which satisfies the Karush-Kuhn-Tucker conditions of the optimization problem. Moreover, the equilibrium point set is equivalent to the optimal solution to the nonconvex optimization problem if the objective function and constraints satisfy given conditions. Four numerical examples are provided to illustrate the performances of the proposed neural network.
Li, H, Jiang, Z, Wei, D, Gao, X, Xu, J & Zhang, X 2015, 'Surface asperity evolution and microstructure analysis of Al 6061T5 alloy in a quasi-static cold uniaxial planar compression (CUPC)', Applied Surface Science, vol. 347, pp. 193-201.
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Li, H, Jiang, Z, Wei, D, Xu, J, Zhang, X, Gong, D & Han, J 2015, 'Study on Surface Asperity Flattening in Cold Quasi-Static Uniaxial Planar Compression by Crystal Plasticity Finite Element Method', Tribology Letters, vol. 58, no. 3.
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Li, H, Öchsner, A, Wei, D, Ni, G & Jiang, Z 2015, 'Crystal plasticity finite element modelling of the effect of friction on surface asperity flattening in cold uniaxial planar compression', Applied Surface Science, vol. 359, pp. 236-244.
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Li, J, Lin, X, Rui, X, Rui, Y & Tao, D 2015, 'A Distributed Approach Toward Discriminative Distance Metric Learning.', IEEE Trans. Neural Networks Learn. Syst., vol. 26, no. 9, pp. 2111-2122.
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Distance metric learning (DML) is successful in
discovering intrinsic relations in data. However, most algorithms
are computationally demanding when the problem size becomes
large. In this paper, we propose a discriminative metric learning
algorithm, develop a distributed scheme learning metrics on
moderate-sized subsets of data, and aggregate the results into
a global solution. The technique leverages the power of parallel
computation. The algorithm of the aggregated DML (ADML)
scales well with the data size and can be controlled by the
partition. We theoretically analyze and provide bounds for the
error induced by the distributed treatment. We have conducted
experimental evaluation of the ADML, both on specially designed
tests and on practical image annotation tasks. Those tests have
shown that the ADML achieves the state-of-the-art performance
at only a fraction of the cost incurred by most existing methods.
Li, J, Wu, C & Hao, H 2015, 'An experimental and numerical study of reinforced ultra-high performance concrete slabs under blast loads', Materials & Design, vol. 82, pp. 64-76.
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Li, J, Wu, C & Hao, H 2015, 'Investigation of ultra-high performance concrete slab and normal strength concrete slab under contact explosion', Engineering Structures, vol. 102, pp. 395-408.
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Li, J, Wu, C, Hao, H & Su, Y 2015, 'Investigation of Ultra-High Performance Concrete under Static and Blast Loads', International Journal of Protective Structures, vol. 6, no. 2, pp. 217-235.
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Conventional concrete works as an important construction material. However, conventional concrete is known to be brittle and prone to tensile failure and cracks. To overcome such defects and improve the dynamic performance of concrete against extreme loading conditions, concrete with different additions and formulae have been developed. In a recent study, to develop ultra-high performance concrete (UHPC) material with better strength and crack control ability, super fine aggregates with high pozzolanic effect were mixed into the steel fibre reinforced concrete instead of the traditional graded coarse aggregates. Furthermore, to achieve high early age strength, nanoscale additives which can accelerate the hydration process of the ordinary Portland cement were also introduced into the concrete composite. A series of uniaxial compression and four-point bending tests had been performed in the laboratory to get the material properties of this innovative concrete material. Great improvement of the concrete uniaxial compressive strength and flexural tensile strength was observed. Field blast tests were carried out on columns made of this UHPC material. Superior blast resistance performance was observed. In the current study, based on the available test data, numerical models are developed and numerical simulations are carried out. The simulation results are found to comply well with the experimental results.
Li, JC, Liu, TT, Li, HB, Liu, YQ, Liu, B & Xia, X 2015, 'Shear Wave Propagation Across Filled Joints with the Effect of Interfacial Shear Strength', Rock Mechanics and Rock Engineering, vol. 48, no. 4, pp. 1547-1557.
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Li, JJ, Kim, K, Roohani-Esfahani, S-I, Guo, J, Kaplan, DL & Zreiqat, H 2015, 'A biphasic scaffold based on silk and bioactive ceramic with stratified properties for osteochondral tissue regeneration', Journal of Materials Chemistry B, vol. 3, no. 26, pp. 5361-5376.
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The developed biphasic scaffold featured a gradient of structural, mechanical and biological cues to match the segments of osteochondral tissue.
Li, K, Safavi-Naeini, M, Franklin, DR, Han, Z, Rosenfeld, AB, Hutton, B & Lerch, MLF 2015, 'A new virtual ring-based system matrix generator for iterative image reconstruction in high resolution small volume PET systems', PHYSICS IN MEDICINE AND BIOLOGY, vol. 60, no. 17, pp. 6949-6973.
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Li, L & Feng, Y 2015, 'Quantum Markov chains: Description of hybrid systems, decidability of equivalence, and model checking linear-time properties', Information and Computation, vol. 244, pp. 229-244.
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Li, N, Ferrie, C, Gross, JA, Kalev, A & Caves, CM 2015, 'Fisher-symmetric informationally complete measurements for pure states', Phys. Rev. Lett., vol. 116, no. 18, pp. 180402-180402.
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We introduce a new kind of quantum measurement that is defined to be
symmetric in the sense of uniform Fisher information across a set of parameters
that injectively represent pure quantum states in the neighborhood of a
fiducial pure state. The measurement is locally informationally
complete---i.e., it uniquely determines these parameters, as opposed to
distinguishing two arbitrary quantum states---and it is maximal in the sense of
a multi-parameter quantum Cramer-Rao bound. For a $d$-dimensional quantum
system, requiring only local informational completeness allows us to reduce the
number of outcomes of the measurement from a minimum close to but below $4d-3$,
for the usual notion of global pure-state informational completeness, to
$2d-1$.
Li, Q-S, Xiong, R, Huang, S & Huang, Y-M 2015, 'Building a dense surface map incrementally from semi-dense point cloud and RGBimages', Frontiers of Information Technology & Electronic Engineering, vol. 16, no. 7, pp. 594-606.
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Li, R, Zhang, W, Su, QP, Xue, B & Sun, Y 2015, 'Structural and Functional Study of Midbody during Cytokinesis', Biophysical Journal, vol. 108, no. 2, pp. 631a-631a.
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Li, S & Liu, W 2015, 'Cardinal directions: a comparison of direction relation matrix and objects interaction matrix', International Journal of Geographical Information Science, vol. 29, no. 2, pp. 194-216.
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Li, S-Y, Chen, S-A, Lin, C-T, Ko, L-W, Yang, C-H & Chen, H-H 2015, 'Generalized Synchronization of Nonlinear Chaotic Systems through Natural Bioinspired Controlling Strategy', Abstract and Applied Analysis, vol. 2015, pp. 1-14.
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A novel bioinspired control strategy design is proposed for generalized synchronization of nonlinear chaotic systems, combining the bioinspired stability theory, fuzzy modeling, and a novel, simple-form Lyapunov control function design of derived high efficient, heuristic and bioinspired controllers. Three main contributions are concluded: (1) apply the bioinspired stability theory to further analyze the stability of fuzzy error systems; the high performance of controllers has been shown in previous study by Li and Ge 2009, (2) a new Lyapunov control function based on bioinspired stability theory is designed to achieve synchronization without using traditional LMI method, which is a simple linear homogeneous function of states and the process of designing controller to synchronize two fuzzy chaotic systems becomes much simpler, and (3) three different situations of synchronization are proposed; classical master and slave Lorenz systems, slave Chen’s system, and Rossler’s system as functional system are illustrated to further show the effectiveness and feasibility of our novel strategy. The simulation results show that our novel control strategy can be applied to different and complicated control situations with high effectiveness.
Li, T, Lu, J & Martinez Lopez, L 2015, 'Preface: Intelligent Techniques for Data Science', INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS, vol. 30, no. 8, pp. 851-853.
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Li, W, Dai, Y, Ma, L, Hao, H, Lu, H, Albinson, R & Li, Z 2015, 'Oil-saving pathways until 2030 for road freight transportation in China based on a cost-optimization model', Energy, vol. 86, pp. 369-384.
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© 2015 Elsevier Ltd. This paper proposed a COSM (cost-optimization superstructure model) and derived the optimized oil-saving pathways for road freight transportation in China until 2030. The optimization target of the COSM was to minimize the accumulated energy and vehicle costs from 2010 to 2030 by choosing the most cost-effective fuel option for newly registered trucks each year. Based on the COSM, three scenarios were developed to evaluate the oil-saving pathway in terms of imported crude oil price, available alternative fuels and GHG emission reduction. The scenario analysis results indicate that: (1) for scenario A, the accumulated oil-saving potential was approximately about 13%, while the oil-saving potential of improving fuel consumption rate and load running rate was 17% and 16%; (2) for scenario B, the accumulated oil-saving potential increased to 82% in reference oil price and 23% in low oil price; (3) for scenario C, to reduce per ton of GHG emission, the increased cost will increase from 34 USD to 450 USD when the GHG emission target decreased from 15.4 billion tons to the turn point of 13.5 billion tons.
Li, W, Huang, Z, Cao, F, Sun, Z & Shah, SP 2015, 'Effects of nano-silica and nano-limestone on flowability and mechanical properties of ultra-high-performance concrete matrix', Construction and Building Materials, vol. 95, pp. 366-374.
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Li, W, Xiao, J, Kawashima, S, Shekhawat, GS & Shah, SP 2015, 'Experimental Investigation on Quantitative Nanomechanical Properties of Cement Paste', ACI Materials Journal, vol. 112, no. 2, pp. 229-238.
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Copyright © 2015, American Concrete Institute. All rights reserved. Nanoindentation, quantitative modulus mapping, and PeakForce quantitative nanomechanical mapping (QNM) are applied to investigate the quantitative nanomechanics of hardened cement paste at different spatial resolutions. The elastic modulus measured by static nanoindentation is slightly higher than those measured by the other methods. The average elastic modulus and probability obtained by PeakForce QNM are typically consistent with those found by modulus mapping. Both modulus mapping and PeakForce QNM can be used to discriminate different material phases in cement paste at the nanoscale. It concludes that cement paste is a granular material in which the sub-micron scale grains or basic nanoscale units pack together. Moreover, the high resolution Peak-Force QNM can provide an efficient tool for identifying nanomechanical properties, particle sizes, and thickness of the interface between different nanoscale grains.
Li, W, Xiao, J, Shi, C & Poon, CS 2015, 'Structural Behaviour of Composite Members with Recycled Aggregate Concrete — An Overview', Advances in Structural Engineering, vol. 18, no. 6, pp. 919-938.
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A series of investigations on structural behaviour, durability, fire-resistance and seismic performance of composite members with recycled aggregate concrete (RAC) have been carried out in the past 10 years (2005–2014). This paper is consisted of three parts: the first part introduces and discusses the research progress in regard to the structural behaviour of RAC filled steel tubular columns and beams; the second part concentrates on the structural behaviour of steel-reinforced RAC members, including columns, beams, shear walls and slabs; and the third part focuses on the long-term performance of composite members with RAC, involving fire resistance, durability and seismic performance. It seems that RAC composite members with different replacement ratios of recycled coarse aggregate have slightly lower or similar structural behaviour compared to that of normal concrete composite members. Review results reveal that it is feasible to apply steel-RAC composite members as structural applications. This intensive review provides a reasonable knowledge of the structural behaviour of steel-RAC composite members, and recommends further investigations on the failure mechanics and durability of steel-RAC composite members which are needed to promote safe and economic application in the future.
Li, WT, Gao, M, Li, H, Xiong, QY, Wen, JH & Ling, B 2015, 'An shilling attack detection algorithm based on popularity degree features', Zidonghua Xuebao/Acta Automatica Sinica, vol. 41, no. 9, pp. 1563-1576.
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Recommendation systems based on collaborative filtering are vulnerable to shilling attacks, so how to detect attacks becomes crucial to ensure the reliability of these systems. Because the current shilling attack detection methods based on features extracted from rating patterns are susceptible to obfuscation technologies, this paper starts from a statistics analysis of the way users choose items to rate, thus getting the corresponding results of different rated items popularity degree (rated times) distributions in normal users's profiles and spam users' profile. Then classification features based on popularity degree are proposed to distinguish these two types of users. Finally, a shilling attack detection algorithm based on popularity features is developed. Experiments show that the detection performance of the algorithm is superior in attack detection precision and interference resistance.
Li, X, Li, J, Wang, H, Huang, X, He, B, Yao, Y, Wang, J, Zhang, H, Ngo, HH & Guo, W 2015, 'A filtration model for prediction of local flux distribution and optimization of submerged hollow fiber membrane module', AIChE Journal, vol. 61, no. 12, pp. 4377-4386.
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Li, X, Nemcik, J, Mirzaghorbanali, A, Aziz, N & Rasekh, H 2015, 'Analytical model of shear behaviour of a fully grouted cable bolt subjected to shearing', International Journal of Rock Mechanics and Mining Sciences, vol. 80, pp. 31-39.
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© 2015 Elsevier Ltd. A fully grouted cable bolt is normally loaded at rock joints by a combination of the axial and shear forces causing both axial extension and shear deformation of the cable. The proposed analyses presented here attempts to predict the joint shear strength and shear displacement. The analyses are based on the statically indeterminate beam theory and some basic findings and conclusions of other researchers. Parametrical investigation is performed on four influence factors including bolt pretension, joint friction angle, concrete strength and bolt installation angle. Although the true plastic moduli of the cable bolt deflecting section at failure are the essential parameters in this analysis, they are practically impossible to determine. Thus, the average cable moduli obtained from the cable tensile strength tests were used. The proposed analytical model was compared with the experimental results, showing a good agreement. This analytical work aims to develop a simple tool for the practicing geotechnical engineer to effectively evaluate the cable shear behaviour and the influence of fully grouted cable bolts on joint shear resistance.
Li, X, Wang, Z, Zhang, Z, Chen, L, Cheng, J, Ni, W, Wang, B & Xie, E 2015, 'Light Illuminated α−Fe2O3/Pt Nanoparticles as Water Activation Agent for Photoelectrochemical Water Splitting', Scientific Reports, vol. 5, no. 1.
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AbstractThe photoelectrochemical (PEC) water splitting is hampered by strong bonds of H2O molecules and low ionic conductivity of pure water. The photocatalysts dispersed in pure water can serve as a water activation agent, which provides an alternative pathway to overcome such limitations. Here we report that the light illuminated α−Fe2O3/Pt nanoparticles may produce a reservoir of reactive intermediates including H2O2, ·OH, OH− and H+ capable of promoting the pure water reduction/oxidation half−reactions at cathode and highly photocatalytic−active TiO2/In2S3/AgInS2 photoanode, respectively. Remarkable photocurrent enhancement has been obtained with α−Fe2O3/Pt as water activation agent. The use of α−Fe2O3/Pt to promote the reactivity of pure water represents a new paradigm for reproducible hydrogen fuel provision by PEC water splitting, allowing efficient splitting of pure water without adding of corrosive chemicals or sacrificial agent.
Li, X, Xu, G, Chen, E & Zong, Y 2015, 'Learning recency based comparative choice towards point-of-interest recommendation', Expert Systems with Applications, vol. 42, no. 9, pp. 4274-4283.
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With the prevalence of GPS-enabled smart phones, Location Based Social Network (LBSN) has emerged and become a hot research topic during the past few years. As one of the most important components in LBSN, Points-of-Interests (POIs) has been extensively studied by both academia and industry, yielding POI recommendations to enhance user experience in exploring the city. In conventional methods, rating vectors for both users and POIs are utilized for similarity calculation, which might yield inaccuracy due to the differences of user biases. In our opinion, the rating values themselves do not give exact preferences of users, however the numeric order of ratings given by a user within a certain period provides a hint of preference order of POIs by such user. Firstly, we propose an approach to model users preference by employing utility theory. Secondly, We devise a collection-wise learning method over partial orders through an effective stochastic gradient descent algorithm. We test our model on two real world datasets, i.e., Yelp and TripAdvisor, by comparing with some state-of-the-art approaches including PMF and several user preference modeling methods. In terms of MAP and Recall, we averagely achieve 15% improvement with regard to the baseline methods. The results show the significance of comparative choice in a certain time window and show its superiority to the existing methods.
Li, X, Zhang, H, Hou, Y, Gao, Y, Li, J, Guo, W & Ngo, HH 2015, 'In situ investigation of combined organic and colloidal fouling for nanofiltration membrane using ultrasonic time domain reflectometry', Desalination, vol. 362, pp. 43-51.
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Li, Y & Li, J 2015, 'A Highly Adjustable Base Isolator Utilizing Magnetorheological Elastomer: Experimental Testing and Modeling', JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME, vol. 137, no. 1.
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This paper presents a recent research advance on the development of a novel adaptive seismic isolation system to be used in seismic protection of civil structures. A highly-adjustable laminated magneto-rheological elastomer (MRE) base isolator was developed and experimental results show that the prototypical MRE base isolator provides amazing increase of lateral stiffness up to1630%. To facilitate the structural control development using such adaptive MRE base isolator, an analytical model was developed to simulate its behaviors. Comparison between the analytical model and experimental data proves the effectiveness of such model in reproducing the behavior of MRE base isolator.
Li, Y & Li, J 2015, 'Finite element design and analysis of adaptive base isolator utilizing laminated multiple magnetorheological elastomer layers', Journal of Intelligent Material Systems and Structures, vol. 26, no. 14, pp. 1861-1870.
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Available magnetorheological elastomer devices normally consist one to two layers of small-size magnetorheological elastomer materials. To be used in large-scale structures, magnetorheological elastomer devices with multiple larger magnetorheological elastomer materials are expected. This article addresses the critical issue in designing a large-scale device with multiple layers of low magnetic conductive magnetorheological elastomer materials, that is, magnetic circuit design. The primary target in magnetic circuit design for magnetorheological elastomer devices is to provide sufficient and uniform magnetic field to all magnetorheological elastomer layers in the device. In this article, finite element investigations are conducted. An innovative magnetic circuit design is proposed for magnetorheological elastomer base isolator with multi-layer of magnetorheological elastomer materials. In the design, laminated magnetorheological elastomer and steel structure is adopted as part of the magnetic core together with two steel blocks. Cylindrical steel tube is used as the yoke of the magnetic circuit. Two plates are placed on the top and bottom of the device to form enclosed magnetic path in the device. Finite element results showed that such innovative magnetic design is able to provide sufficient and uniform magnetic field to all magnetorheological elastomer layers, that is, 25 magnetorheological elastomer layers with thickness of 1 mm and diameter of 120 mm in this case. Finally, the influence of lateral deformation of the magnetorheological elastomer base isolator on the magnetic field is investigated. It is found that the magnetic field in magnetorheological elastomer materials deteriorates when the deformation of the device increases.
Li, Y, Liu, Z, Zhang, Y, Su, QP, Xue, B, Shao, S, Zhu, Y, Xu, X, Wei, S & Sun, Y 2015, 'Live-cell and super-resolution imaging reveal that the distribution of wall-associated protein A is correlated with the cell chain integrity ofStreptococcus mutans', Molecular Oral Microbiology, vol. 30, no. 5, pp. 376-383.
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Streptococcus mutans is a primary pathogen responsible for dental caries. It has an outstanding ability to form biofilm, which is vital for virulence. Previous studies have shown that knockout of Wall-associated protein A (WapA) affects cell chain and biofilm formation of S. mutans. As a surface protein, the distribution of WapA remains unknown, but it is important to understand the mechanism underlying the function of WapA. This study applied the fluorescence protein mCherry as a reporter gene to characterize the dynamic distribution of WapA in S. mutans via time-lapse and super-resolution fluorescence imaging. The results revealed interesting subcellular distribution patterns of WapA in single, dividing and long chains of S. mutans cells. It appears at the middle of the cell and moves to the poles as the cell grows and divides. In a cell chain, after each round of cell division, such dynamic relocation results in WapA distribution at the previous cell division sites, resulting in a pattern where WapA is located at the boundary of two adjacent cell pairs. This WapA distribution pattern corresponds to the breaking segmentation of wapA deletion cell chains. The dynamic relocation of WapA through the cell cycle increases our understanding of the mechanism of WapA in maintaining cell chain integrity and biofilm formation.
Li, Z, He, Y, Wong, L & Li, J 2015, 'Burial Level Change Defines a High Energetic Relevance for Protein Binding Interfaces', IEEE-ACM TRANSACTIONS ON COMPUTATIONAL BIOLOGY AND BIOINFORMATICS, vol. 12, no. 2, pp. 410-421.
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Protein-protein interfaces defined through atomic contact or solvent accessibility change are widely adopted in structural biology studies. But, these definitions cannot precisely capture energetically important regions at protein interfaces. The burial depth of an atom in a protein is related to the atom's energy. This work investigates how closely the change in burial level of an atom/residue upon complexation is related to the binding. Burial level change is different from burial level itself. An atom deeply buried in a monomer with a high burial level may not change its burial level after an interaction and it may have little burial level change. We hypothesize that an interface is a region of residues all undergoing burial level changes after interaction. By this definition, an interface can be decomposed into an onion-like structure according to the burial level change extent. We found that our defined interfaces cover energetically important residues more precisely, and that the binding free energy of an interface is distributed progressively from the outermost layer to the core. These observations are used to predict binding hot spots. Our approach's F-measure performance on a benchmark dataset of alanine mutagenesis residues is much superior or similar to those by complicated energy modeling or machine learning approaches.
Li, Z, Qin, L, Cheng, H, Zhang, X & Zhou, X 2015, 'TRIP: An Interactive Retrieving-Inferring Data Imputation Approach.', IEEE Trans. Knowl. Data Eng., vol. 27, pp. 2550-2563.
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Data imputation aims at filling in missing attribute values in databases. Most existing imputation methods to string attribute
values are inferring-based approaches, which usually fail to reach a high imputation recall by just inferring missing values from the
complete part of the data set. Recently, some retrieving-based methods are proposed to retrieve missing values from external
resources such as the World Wide Web, which tend to reach a much higher imputation recall, but inevitably bring a large overhead by
issuing a large number of search queries. In this paper, we investigate the interaction between the inferring-based methods and the
retrieving-based methods. We show that retrieving a small number of selected missing values can greatly improve the imputation recall
of the inferring-based methods. With this intuition, we propose an inTeractive Retrieving-Inferring data imPutation approach (TRIP),
which performs retrieving and inferring alternately in filling in missing attribute values in a data set. To ensure the high recall at the
minimum cost, TRIP faces a challenge of selecting the least number of missing values for retrieving to maximize the number of
inferable values. Our proposed solution is able to identify an optimal retrieving-inferring scheduling scheme in deterministic data
imputation, and the optimality of the generated scheme is theoretically analyzed with proofs. We also analyze with an example that the
optimal scheme is not feasible to be achieved in t-constrained stochastic data imputation (t-SDI), but still, our proposed solution
identifies an expected-optimal scheme in t-SDI. Extensive experiments on four data collections show that TRIP retrieves on average
20 percent missing values and achieves the same high recall that was reached by the retrieving-based approach.
Li, Z-J, Guo, Z-H, Wang, N, Xu, Z-Y, Qu, Y, Wang, X-Q, Sun, J, Yan, L-Q, Ng, RMK, Turkington, D & Kingdon, D 2015, 'Cognitive–behavioural therapy for patients with schizophrenia: a multicentre randomized controlled trial in Beijing, China', Psychological Medicine, vol. 45, no. 9, pp. 1893-1905.
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BackgroundMeta-analyses support the efficacy of cognitive–behavioural therapy (CBT) for schizophrenia in western cultures. This study aimed to compare the efficacy of CBT and supportive therapy (ST) for patients with schizophrenia in China.MethodA multicentre randomized controlled, single-blinded, parallel-group trial enrolled a sample of 192 patients with schizophrenia. All patients were offered 15 sessions of either CBT or ST over 24 weeks and followed up for an additional 60 weeks. All measures used were standardized instruments with good reliability and validity. The Positive and Negative Syndrome Scale (PANSS) was used to assess symptoms of schizophrenia. The Schedule for Assessing Insight (SAI) was used to assess patients’ insight and the Personal and Social Performance Scale (PSP) was used to assess their social functioning.ResultsEffect-size analysis showed that patients made rapid improvements in all symptoms, insight and social functioning as measured by the PANSS, SAI and PSP at 12 and 24 weeks and maintained these improvements over the course of the study to 84 weeks. Patients in the CBT group showed significantly greater and more durable improvement in PANSS total score (p = 0.045, between-groupd = 0.48), positive symptoms (p = 0.018, between-groupd = 0.42) and social functioning (p = 0.037, between-groupd = 0.64), with significant differences emerging after completion of therapy.Conclusions
Liang, J, Vinh Nguyen, Q, Simoff, S & Lin Huang, M 2015, 'Divide and Conquer treemaps: Visualizing large trees with various shapes', Journal of Visual Languages & Computing, vol. 31, no. 2015, pp. 104-127.
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Liao, H, Xu, Z, Zeng, X-J & Merigo, JM 2015, 'Framework of Group Decision Making With Intuitionistic Fuzzy Preference Information', IEEE Transactions on Fuzzy Systems, vol. 23, no. 4, pp. 1211-1227.
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Liao, H, Xu, Z, Zeng, X-J & Merigó, JM 2015, 'Qualitative decision making with correlation coefficients of hesitant fuzzy linguistic term sets', Knowledge-Based Systems, vol. 76, pp. 127-138.
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Lijun Zhang, Xiaohua Xia & Jiangfeng Zhang 2015, 'Medium Density Control for Coal Washing Dense Medium Cyclone Circuits', IEEE Transactions on Control Systems Technology, vol. 23, no. 3, pp. 1117-1122.
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Lin, C-T, Chiu, T-C & Gramann, K 2015, 'EEG correlates of spatial orientation in the human retrosplenial complex', NeuroImage, vol. 120, pp. 123-132.
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Lin, C-T, Prasad, M & Saxena, A 2015, 'An Improved Polynomial Neural Network Classifier Using Real-Coded Genetic Algorithm', IEEE Transactions on Systems, Man, and Cybernetics: Systems, vol. 45, no. 11, pp. 1389-1401.
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Lin, H, Batty, M, Jørgensen, SE, Fu, B, Konecny, M, Voinov, A, Torrens, P, Lu, G, Zhu, A, Wilson, JP, Gong, J, Kolditz, O, Bandrova, T & Chen, M 2015, 'Virtual Environments Begin to Embrace Process‐based Geographic Analysis', Transactions in GIS, vol. 19, no. 4, pp. 493-498.
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Lin, S, Ni, W, Tian, H & Liu, RP 2015, 'An Evolutionary Game Theoretic Framework for Femtocell Radio Resource Management', IEEE Transactions on Wireless Communications, vol. 14, no. 11, pp. 6365-6376.
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Liu, A, Richards, L, Bladen, CL, Ingham, E, Fisher, J & Tipper, JL 2015, 'The biological response to nanometre-sized polymer particles', Acta Biomaterialia, vol. 23, pp. 38-51.
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Liu, C, Zhu, J, Wang, Y, Guo, Y & Lei, G 2015, 'Comparison of Claw-Pole Machines With Different Rotor Structures', IEEE Transactions on Magnetics, vol. 51, no. 11, pp. 1-4.
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Liu, C, Zhu, J, Wang, Y, Guo, Y, Lei, G & Liu, X 2015, 'Development of a low-cost double rotor axial flux motor with soft magnetic composite and ferrite permanent magnet materials', Journal of Applied Physics, vol. 117, no. 17, pp. 17B507-17B507.
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This paper proposes a low-cost double rotor axial flux motor (DRAFM) with low cost soft magnetic composite (SMC) core and ferrite permanent magnets (PMs). The topology and operating principle of DRAFM and design considerations for best use of magnetic materials are presented. A 905 W 4800 rpm DRAFM is designed for replacing the high cost NdFeB permanent magnet synchronous motor (PMSM) in a refrigerator compressor. By using the finite element method, the electromagnetic parameters and performance of the DRAFM operated under the field oriented control scheme are calculated. Through the analysis, it is shown that that the SMC and ferrite PM materials can be good candidates for low-cost electric motor applications.
Liu, H & Madanat, S 2015, 'Adaptive optimisation methods in system-level bridge management', Structure and Infrastructure Engineering, vol. 11, no. 7, pp. 884-896.
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We introduce an approach for modelling the structural deterioration of components of bridges for maintenance optimization purposes. The Markov chain model is found in the maintenance and repair problems since the early 60's, is introduced to the maintenance of road infrastructure in the 1980's, and is made to drive the current bridge maintenance optimization systems. While this model results into solvable programming problems and provides a solution, there are a number of criticisms associated with it. We highlight the shortfalls of the Markov model for bridge lifetime assessment and promote the use of stochastic processes.
Liu, H, Hou, X, Kim, J & Zhong, Y 2015, 'Decoupled Robust Velocity Control for Uncertain Quadrotors', Asian Journal of Control, vol. 17, no. 1, pp. 225-233.
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AbstractIn this paper, a decoupled robust velocity control method is investigated for a quadrotor. Although the quadrotor dynamics involves inter‐axis coupling and nonlinearity, the quadrotor system is divided into four single‐input single‐output (SISO) subsystems. For each subsystem, a linear time‐invariant robust controller is proposed, which uses its own states and consists of a nominal controller and a robust compensator. The nominal controller is designed by the proportional‐integral‐derivative (PID) control method to achieve the desired tracking for the nominal system. A robust compensator is added to restrain the influence of the parametric uncertainties, nonlinear dynamics, coupling, and external disturbances. The tracking error of each subsystem is proven to converge into an a priori set in the neighborhood of the origin in a finite time. Experimental results on the quadrotor demonstrate the effectiveness of the proposed control method.
Liu, H, Wang, J, Wijayaratna, K, Dixit, VV & Waller, ST 2015, 'Integrating the Bus Vehicle Class Into the Cell Transmission Model', IEEE Transactions on Intelligent Transportation Systems, vol. 16, no. 5, pp. 2620-2630.
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© 2015 IEEE. The traditional cell transmission model (CTM), a well-known dynamic traffic simulation method, does not cater to the presence of moving bottlenecks, which may be caused by buses traveling within a network. This may affect the dynamics of congestion that is present and may also affect route choice by all vehicles on a network. The main contribution of this paper is to provide an analytical formulation for a mixed traffic system that includes cars and buses, which realistically replicates moving bottlenecks. We modify the CTM model using methods from the lagged CTM to recognize speed differentials between the free-flow speed of buses and cars. In addition, the impact of capacity reduction caused by buses was incorporated. These developments led to the replication of moving bottlenecks caused by buses within the CTM framework. The formulated variant of CTM was utilized to determine a system optimal assignment that minimizes the total passenger travel time across cars and buses. The proposed modified CTM model, defined as the BUS-CTM, has been applied on a road link and a more detailed network to demonstrate the effectiveness of the approach. The numerical results and the depiction of the bottleneck phenomenon within the model suggests that the BUS-CTM obtains more realistic results compared with the application of the traditional CTM in a mixed car-bus transportation system. The sensitivity analysis shows that bus passenger demand, passenger occupancy of bus, and bus free-flow speeds are the key parameters that influence the system performance.
Liu, H, Zhang, J, Ngo, HH, Guo, W, Wu, H, Cheng, C, Guo, Z & Zhang, C 2015, 'Carbohydrate-based activated carbon with high surface acidity and basicity for nickel removal from synthetic wastewater', RSC Advances, vol. 5, no. 64, pp. 52048-52056.
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The feasibility of preparing activated carbon from carbohydrates (glucose, sucrose and starch) with H3PO4 activation was evaluated by comparing its physicochemical properties and Ni(ii) adsorption ability with a reference Phragmites australis-based activated carbon.
Liu, H, Zhang, J, Ngo, HH, Guo, W, Wu, H, Guo, Z, Cheng, C & Zhang, C 2015, 'Effect on physical and chemical characteristics of activated carbon on adsorption of trimethoprim: mechanisms study', RSC Advances, vol. 5, no. 104, pp. 85187-85195.
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Five different types of activated carbon varying in porosity, structure, and functional groups were prepared and used as adsorbents.
Liu, H, Zhu, X, Boon, CC & He, X 2015, 'Cell-Based Variable-Gain Amplifiers With Accurate dB-Linear Characteristic in 0.18 µm CMOS Technology', IEEE Journal of Solid-State Circuits, vol. 50, no. 2, pp. 586-596.
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A simple and robust “cell-based” method is presented
for the design of variable-gain amplifiers (VGAs). The proposed
unit cell utilizes a unique gain compensation method and achieves
accurate dB-linear characteristic across a wide tuning range with
low power consumption and wide bandwidth. Several such highly
dB-linear unit cells can be cascaded to provide the required gain
range for a VGA. To prove the concept, single-cell, 5-cell, 10-cell
and 15-cell reconfigurable VGAs were fabricated in a standard
0.18 µm CMOS technology. The measurement results show that
the 10-cell VGA achieves a gain range of 38.6 dB with less than
0.19 dB gain error. The 15-cell VGA can either be used as recon-
figurable VGA for analog control voltage or tunable PGA for digital
control stream, with the flexibility of scaling gain range, gain
error/step and power consumption. For the VGA at highest gain
setting, it consumes 1.12 mW and achieves a gain range of 56 dB,
gain error less than 0.3 dB.
Liu, H, Zhu, X, Boon, CC & Yi, X 2015, 'Design of an oscillator with low phase noise and medium output power in a 0.25 µm GaN‐on‐SiC high electron‐mobility transistors technology', IET Microwaves, Antennas & Propagation, vol. 9, no. 8, pp. 795-801.
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Liu, H, Zhu, X, Boon, CC, Yi, X & Kong, L 2015, 'A 71 dB 150 <formula formulatype='inline'><tex Notation='TeX'>$\mu {\rm W}$</tex></formula> Variable-Gain Amplifier in 0.18 <formula formulatype='inline'><tex Notation='TeX'>$\mu{\rm m}$</tex></formula> CMOS Technology', IEEE Microwave and Wireless Components Letters, vol. 25, no. 5, pp. 334-336.
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Liu, K, Law, S-S & Zhu, X-Q 2015, 'Sensitivity Enhancement for Structural Condition Assessment with Noisy Excitation or with Only Output', International Journal of Structural Stability and Dynamics, vol. 15, no. 06, pp. 1450083-1450083.
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Revisited herein is the response sensitivity method for structural condition assessment. The performance of a sensitivity enhancement technique for structural damage identification is discussed with reference to cases with noisy excitation or with only output. An extended study on the structural condition assessment is conducted based on a newly developed force identification technique and the response sensitivity enhancement method. Numerical simulations with a planar truss structure show that the adverse effect of noise in excitation cannot be ignored in damage detection. A two-step method including the sensitivity enhancement technique for damage detection could improve the identification accuracy with less influence from the identified excitations. The improved structural condition assessment with sensitivity enhancement technique out-performs the conventional sensitivity approach with more accurate results from the truss structure studied even with a 10% noise in the measured responses.
Liu, K, Law, S-S & Zhu, X-Q 2015, 'Substructural Condition Assessment Based on Force Identification and Interface Force Sensitivity', International Journal of Structural Stability and Dynamics, vol. 15, no. 02, pp. 1450046-1450046.
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Time domain substructural condition assessment method is actively researched in recent years to avoid the problem with uncertainties in the different components of the structure, boundary conditions and with an improved effort in the inverse computation. Since the interface force between substructures would vary with the existence of local damages and excitation in the substructures, existing condition assessment method for a full structure cannot be applied directly to the substructures. Also, most existing approaches adopt the state space method in the response prediction. However, the state space method can be shown in this paper inaccurate in the forward substructural dynamic analysis due to the discretization error, and therefore identification based on this method cannot give satisfactory result for a substructure. The force identification for a full structure based on the explicit Newmark-β method has been shown superior to the state space method [K. Liu et al., J. Sound Vibr.33(3) (2014) 730–744]. This method is extended in this paper for substructural interface force identification. The variation of interface forces between substructures with variation in the substructural condition is illustrated with a plane truss structure. Subsequent condition assessment based on substructural response sensitivity is proposed with the analytical derivation of the sensitivity taking into account the interface force sensitivity which is not small to be ignored. The new damage detection method based on the explicit Newmark-β method and the substructural response sensitivity is verified numerically with different damage scenarios in a plane truss structure giving satisfactory results.
Liu, L, Kong, X & Chen, J 2015, 'How project duration, upfront costs and uncertainty interact and impact on software development productivity? A simulation approach', International Journal of Agile Systems and Management, vol. 8, no. 1, pp. 39-39.
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Identifying impact factors on software development productivity and the static relations between the impact factors and performance has been the main focus in the literature. Insight into the dynamic relation between key factors and performance dimensions would expand and complement the conventional wisdom on software development productivity. This is the first study to present such dynamic relationship based on an Analytical Theory of Project Investment. Through simulation, we have demonstrated the dynamic relationship between project duration, the uncertainty level of the perceived project value, the fixed project upfront cost and software development productivity. The findings provide practitioners with insight into how these factors interact and impact on software development project productivity.
Liu, Q, Ren, J, Song, J & Li, J 2015, 'Co-Occurring Atomic Contacts for the Characterization of Protein Binding Hot Spots', PLOS ONE, vol. 10, no. 12, pp. e0144486-e0144486.
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A binding hot spot is a small area at a protein-protein interface that can make significant contribution to binding free energy. This work investigates the substantial contribution made by some special co-occurring atomic contacts at a binding hot spot. A co-occurring atomic contact is a pair of atomic contacts that are close to each other with no more than three covalent-bond steps. We found that two kinds of co-occurring atomic contacts can play an important part in the accurate prediction of binding hot spot residues. One is the co-occurrence of two nearby hydrogen bonds. For example, mutations of any residue in a hydrogen bond network consisting of multiple co-occurring hydrogen bonds could disrupt the interaction considerably. The other kind of co-occurring atomic contact is the co-occurrence of a hydrophobic carbon contact and a contact between a hydrophobic carbon atom and a π ring. In fact, this co-occurrence signifies the collective effect of hydrophobic contacts. We also found that the B-factor measurements of several specific groups of amino acids are useful for the prediction of hot spots. Taking the B-factor, individual atomic contacts and the co-occurring contacts as features, we developed a new prediction method and thoroughly assessed its performance via cross-validation and independent dataset test. The results show that our method achieves higher prediction performance than well-known methods such as Robetta, FoldX and Hotpoint. We conclude that these contact descriptors, in particular the novel co-occurring atomic contacts, can be used to facilitate accurate and interpretable characterization of protein binding hot spots.
Liu, Q, Song, R & Li, J 2015, 'Inference of gene interaction networks using conserved subsequential patterns from multiple time course gene expression datasets', BMC Genomics, vol. 16, no. S12, pp. 1-16.
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MOTIVATION: Deciphering gene interaction networks (GINs) from time-course gene expression (TCGx) data is highly valuable to understand gene behaviors (e.g., activation, inhibition, time-lagged causality) at the system level. Existing methods usually use a global or local proximity measure to infer GINs from a single dataset. As the noise contained in a single data set is hardly self-resolved, the results are sometimes not reliable. Also, these proximity measurements cannot handle the co-existence of the various in vivo positive, negative and time-lagged gene interactions. METHODS AND RESULTS: We propose to infer reliable GINs from multiple TCGx datasets using a novel conserved subsequential pattern of gene expression. A subsequential pattern is a maximal subset of genes sharing positive, negative or time-lagged correlations of one expression template on their own subsets of time points. Based on these patterns, a GIN can be built from each of the datasets. It is assumed that reliable gene interactions would be detected repeatedly. We thus use conserved gene pairs from the individual GINs of the multiple TCGx datasets to construct a reliable GIN for a species. We apply our method on six TCGx datasets related to yeast cell cycle, and validate the reliable GINs using protein interaction networks, biopathways and transcription factor-gene regulations. We also compare the reliable GINs with those GINs reconstructed by a global proximity measure Pearson correlation coefficient method from single datasets. It has been demonstrated that our reliable GINs achieve much better prediction performance especially with much higher precision. The functional enrichment analysis also suggests that gene sets in a reliable GIN are more functionally significant. Our method is especially useful to decipher GINs from multiple TCGx datasets related to less studied organisms where little knowledge is available except gene expression data.
Liu, R, Zhao, Y, Wei, S & Yang, Y 2015, 'Indexing of CNN Features for Large Scale Image Search', Multimedia Tools and Applications, vol. 77, no. 24, pp. 32107-32131.
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The convolutional neural network (CNN) features can give a good description
of image content, which usually represent images with unique global vectors.
Although they are compact compared to local descriptors, they still cannot
efficiently deal with large-scale image retrieval due to the cost of the linear
incremental computation and storage. To address this issue, we build a simple
but effective indexing framework based on inverted table, which significantly
decreases both the search time and memory usage. In addition, several
strategies are fully investigated under an indexing framework to adapt it to
CNN features and compensate for quantization errors. First, we use multiple
assignment for the query and database images to increase the probability of
relevant images' co-existing in the same Voronoi cells obtained via the
clustering algorithm. Then, we introduce embedding codes to further improve
precision by removing false matches during a search. We demonstrate that by
using hashing schemes to calculate the embedding codes and by changing the
ranking rule, indexing framework speeds can be greatly improved. Extensive
experiments conducted on several unsupervised and supervised benchmarks support
these results and the superiority of the proposed indexing framework. We also
provide a fair comparison between the popular CNN features.
Liu, S, Lazos, L & Krunz, M 2015, 'Time-Delayed Broadcasting for Defeating Inside Jammers', IEEE Transactions on Dependable and Secure Computing, vol. 12, no. 3, pp. 351-365.
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Liu, W, Cook, K & Canning, J 2015, 'Ultrahigh-Temperature Regeneration of Long Period Gratings (LPGs) in Boron-Codoped Germanosilicate Optical Fibre', Sensors, vol. 15, no. 8, pp. 20659-20677.
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Liu, W, Deng, Z-H, Cao, L, Xu, X, Liu, H & Gong, X 2015, 'Mining Top K Spread Sources for a Specific Topic and a Given Node', IEEE Transactions on Cybernetics, vol. 45, no. 11, pp. 2472-2483.
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Liu, W, Jia, S, Li, P, Chen, X, Yang, J & Wu, Q 2015, 'An MRF-Based Depth Upsampling: Upsample the Depth Map With Its Own Property', IEEE Signal Processing Letters, vol. 22, no. 10, pp. 1708-1712.
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Liu, W, Xue, H, Yu, Z, Wu, Q & Yang, J 2015, 'RGB-D depth-map restoration using smooth depth neighborhood supports', Journal of Electronic Imaging, vol. 24, no. 3, pp. 033015-033015.
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Liu, X, Wang, L, Huang, G-B, Zhang, J & Yin, J 2015, 'Multiple kernel extreme learning machine', Neurocomputing, vol. 149, pp. 253-264.
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Liu, Y & Ni, B-J 2015, 'Appropriate Fe (II) Addition Significantly Enhances Anaerobic Ammonium Oxidation (Anammox) Activity through Improving the Bacterial Growth Rate', Scientific Reports, vol. 5, no. 1.
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AbstractThe application of anaerobic ammonium oxidation (Anammox) process is often limited by the slow growth rate of Anammox bacteria. As the essential substrate element that required for culturing Anammox sludge, Fe (II) is expected to affect Anammox bacterial growth. This work systematically studied the effects of Fe (II) addition on Anammox activity based on the kinetic analysis of specific growth rate using data from batch tests with an enriched Anammox sludge at different dosing levels. Results clearly demonstrated that appropriate Fe (II) dosing (i.e., 0.09 mM) significantly enhanced the specific Anammox growth rate up to 0.172 d−1 compared to 0.118 d−1 at regular Fe (II) level (0.03 mM). The relationship between Fe (II) concentration and specific Anammox growth rate was found to be well described by typical substrate inhibition kinetics, which was integrated into currently well-established Anammox model to describe the enhanced Anammox growth with Fe (II) addition. The validity of the integrated Anammox model was verified using long-term experimental data from three independent Anammox reactors with different Fe (II) dosing levels. This Fe (II)-based approach could be potentially implemented to enhance the process rate for possible mainstream application of Anammox technology, in order for an energy autarchic wastewater treatment.
Liu, Y, Chen, S, Ren, Y, Cheng, J & Liu, QH 2015, 'A broadband proximity-coupled dual-polarized microstrip antenna with L-shape backed cavity for X-band applications', AEU - International Journal of Electronics and Communications, vol. 69, no. 9, pp. 1226-1232.
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Liu, Y, Luo, X & Xuan, J 2015, 'Online hot event discovery based on Association Link Network.', Concurr. Comput. Pract. Exp., vol. 27, no. 15, pp. 4001-4014.
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Liu, Y, Ni, B-J, Ganigué, R, Werner, U, Sharma, KR & Yuan, Z 2015, 'Sulfide and methane production in sewer sediments', Water Research, vol. 70, pp. 350-359.
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Liu, Y, Ni, B-J, Sharma, KR & Yuan, Z 2015, 'Methane emission from sewers', Science of The Total Environment, vol. 524-525, pp. 40-51.
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Liu, Y, Pan, Y, Wang, Q & Huang, D 2015, 'Statistical process monitoring with integration of data projection and one-class classification', Chemometrics and Intelligent Laboratory Systems, vol. 149, pp. 1-11.
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Liu, Y, Peng, L, Chen, X & Ni, B-J 2015, 'Mathematical Modeling of Nitrous Oxide Production during Denitrifying Phosphorus Removal Process', Environmental Science & Technology, vol. 49, no. 14, pp. 8595-8601.
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Liu, Y, Peng, L, Gao, S-H, Dai, X & Ni, B-J 2015, 'Mathematical modeling of microbial extracellular electron transfer by electrically active microorganisms', Environmental Science: Water Research & Technology, vol. 1, no. 6, pp. 747-752.
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A new mathematical model was proposed to describe the extracellular electron transfer process by electrically active microorganisms.
Liu, Y, Peng, L, Guo, J, Chen, X, Yuan, Z & Ni, B-J 2015, 'Evaluating the Role of Microbial Internal Storage Turnover on Nitrous Oxide Accumulation During Denitrification', Scientific Reports, vol. 5, no. 1.
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AbstractBiological wastewater treatment processes under a dynamic regime with respect to carbon substrate can result in microbial storage of internal polymers (e.g., polyhydroxybutyrate (PHB)) and their subsequent utilizations. These storage turnovers play important roles in nitrous oxide (N2O) accumulation during heterotrophic denitrification in biological wastewater treatment. In this work, a mathematical model is developed to evaluate the key role of PHB storage turnovers on N2O accumulation during denitrification for the first time, aiming to establish the key relationship between N2O accumulation and PHB storage production. The model is successfully calibrated and validated using N2O data from two independent experimental systems with PHB storage turnovers. The model satisfactorily describes nitrogen reductions, PHB storage/utilization and N2O accumulation from both systems. The results reveal a linear relationship between N2O accumulation and PHB production, suggesting a substantial effect of PHB storage on N2O accumulation during denitrification. Application of the model to simulate long-term operations of a denitrifying sequencing batch reactor and a denitrifying continuous system indicates the feeding pattern and sludge retention time would alter PHB turnovers and thus affect N2O accumulation. Increasing PHB utilization could substantially raise N2O accumulation due to the relatively low N2O reduction rate when using PHB as carbon source.
Liu, Y, Sharma, KR, Ni, B-J, Fan, L, Murthy, S, Tyson, GQ & Yuan, Z 2015, 'Effects of nitrate dosing on sulfidogenic and methanogenic activities in sewer sediment', Water Research, vol. 74, pp. 155-165.
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Liu, Y, Wang, Q, Zhang, Y & Ni, B-J 2015, 'Zero Valent Iron Significantly Enhances Methane Production from Waste Activated Sludge by Improving Biochemical Methane Potential Rather Than Hydrolysis Rate', Scientific Reports, vol. 5, no. 1.
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AbstractAnaerobic digestion has been widely applied for waste activated sludge (WAS) treatment. However, methane production from anaerobic digestion of WAS is usually limited by the slow hydrolysis rate and/or poor biochemical methane potential of WAS. This work systematically studied the effects of three different types of zero valent iron (i.e., iron powder, clean scrap and rusty scrap) on methane production from WAS in anaerobic digestion, by using both experimental and mathematical approaches. The results demonstrated that both the clean and the rusty iron scrap were more effective than the iron powder for improving methane production from WAS. Model-based analysis showed that ZVI addition significantly enhanced methane production from WAS through improving the biochemical methane potential of WAS rather than its hydrolysis rate. Economic analysis indicated that the ZVI-based technology for enhancing methane production from WAS is economically attractive, particularly considering that iron scrap can be freely acquired from industrial waste. Based on these results, the ZVI-based anaerobic digestion process of this work could be easily integrated with the conventional chemical phosphorus removal process in wastewater treatment plant to form a cost-effective and environment-friendly approach, enabling maximum resource recovery/reuse while achieving enhanced methane production in wastewater treatment system.
Liu, Y, Zhang, Y & Ni, B-J 2015, 'Evaluating Enhanced Sulfate Reduction and Optimized Volatile Fatty Acids (VFA) Composition in Anaerobic Reactor by Fe (III) Addition', Environmental Science & Technology, vol. 49, no. 4, pp. 2123-2131.
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Anaerobic reactors with ferric iron addition have been experimentally demonstrated to be able to simultaneously improve sulfate reduction and organic matter degradation during sulfate-containing wastewater treatment. In this work, a mathematical model is developed to evaluate the impact of ferric iron addition on sulfate reduction and organic carbon removal as well as the volatile fatty acids (VFA) composition in anaerobic reactor. The model is successfully calibrated and validated using independent long-term experimental data sets from the anaerobic reactor with Fe (III) addition under different operational conditions. The model satisfactorily describes the sulfate reduction, organic carbon removal and VFA production. Results show Fe (III) addition induces the microbial reduction of Fe (III) by iron reducing bacteria (IRB), which significantly enhances sulfate reduction by sulfate reducing bacteria (SRB) and subsequently changes the VFA composition to acetate-dominating effluent. Simultaneously, the produced Fe (II) from IRB can alleviate the inhibition of undissociated H2S on microorganisms through iron sulfide precipitation, resulting in further improvement of the performance. In addition, the enhancement on reactor performance by Fe (III) is found to be more significantly favored at relatively low organic carbon/SO42– ratio (e.g., 1.0) than at high organic carbon/SO42– ratio (e.g., 4.5). The Fe (III)-based process of this work can be easily integrated with a commonly used strategy for phosphorus recovery, with the produced sulfide being recovered and then deposited into conventional chemical phosphorus removal sludge (FePO4) to achieve FeS precipitation for phosphorus recovery while the required Fe (III) being acquired from the waste ferric sludge of drinking water treatment process, to enable maximum resource recovery/reuse while achieving high-rate sulfate removal.
Liu, Y, Zhang, Y & Ni, B-J 2015, 'Zero valent iron simultaneously enhances methane production and sulfate reduction in anaerobic granular sludge reactors', Water Research, vol. 75, pp. 292-300.
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Liu, Z, Liang, J & Wu, C 2015, 'Dynamic Green׳s function for a three-dimensional concentrated load in the interior of a poroelastic layered half-space using a modified stiffness matrix method', Engineering Analysis with Boundary Elements, vol. 60, pp. 51-66.
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Liu, Z, Zhang, Z, Wu, Q & Wang, Y 2015, 'Enhancing person re-identification by integrating gait biometric', Neurocomputing, vol. 168, pp. 1144-1156.
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Person re-identification is an important problem for associating behavior of people monitored in surveillance camera networks. The fundamental challenges of person re-identification are the large appearance distortions caused by view angles, illumination and occlusions. To address these challenges, a method is proposed in this paper to enhance person re-identification by integrating gait biometric. The proposed framework consists of the hierarchical feature extraction and descriptor matching with learned metric matrices. Considering the appearance feature is not discriminative in some cases, the feature in this work composes of the appearance features and the gait feature for shape and temporal information. In order to solve the view-angle change problem and measuring similarity, data are mapped into a metric space so that distances between people can be measured more accurately. Then two fusion strategies are adopted. The score-level fusion computes distances on the appearance feature and the gait feature, respectively, and combine them as the final distance between samples. The feature-level fusion firstly installs two types of features in series and then computes distances by the fused feature. Finally, our method is tested on the CASIA gait dataset. Experiments show that integrating gait biometric is an effective way to enhance person re-identification.
Llopis-Albert, C, Merigó, JM & Palacios-Marqués, D 2015, 'Structure Adaptation in Stochastic Inverse Methods for Integrating Information', Water Resources Management, vol. 29, no. 1, pp. 95-107.
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Loads, B, Li, J, Wu, C & Hao, G 2015, 'Residual Loading Capacity of Ultra-High Performance Concrete Columns After', International Journal of Protective Structures, vol. 6, no. 4, pp. 649-669.
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Columns are essential load carrying structural components and may experience accidental loads such as terrorist bombing attacks during their service life. Damages to columns may trigger structural collapse and it is therefore very important to protect critical load-carrying columns. In recent studies, a novel ultra-high performance concrete (UHPC) material was developed and static loading test results revealed its outstanding mechanical strengths and ductility. The present study investigates the blast load-carrying capacities of columns made of UHPC. Concrete columns built with UHPC were blast tested in the field first; then brought back to laboratory and subjected to static load tests to determine their residual load-carrying capacities after experiencing varying levels of blast damage. The results from the field blast tests and laboratory static load tests for residual load-carrying capacities are presented and discussed in this paper. Numerical models for simulating responses and residual strengths of the UHPC columns after blast loadings are also developed in commercial hydro-code LS-DYNA and presented in the paper. Comparisons between the test data and numerical results are made and the accuracy of the numerical model is validated.
Lotfi, F, Phuntsho, S, Majeed, T, Kim, K, Han, DS, Abdel-Wahab, A & Shon, HK 2015, 'Thin film composite hollow fibre forward osmosis membrane module for the desalination of brackish groundwater for fertigation', DESALINATION, vol. 364, pp. 108-118.
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Lu, D, Xin, T, Yu, N, Ji, Z, Chen, J, Long, G, Baugh, J, Peng, X, Zeng, B & Laflamme, R 2015, 'Tomography is necessary for universal entanglement detection with single-copy observables', Phys. Rev. Lett., vol. 116, no. 23, p. 230501.
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Entanglement, one of the central mysteries of quantum mechanics, plays an
essential role in numerous applications of quantum information theory. A
natural question of both theoretical and experimental importance is whether
universal entanglement detection is possible without full state tomography. In
this work, we prove a no-go theorem that rules out this possibility for any
non-adaptive schemes that employ single-copy measurements only. We also examine
in detail a previously implemented experiment, which claimed to detect
entanglement of two-qubit states via adaptive single-copy measurements without
full state tomography. By performing the experiment and analyzing the data, we
demonstrate that the information gathered is indeed sufficient to reconstruct
the state. These results reveal a fundamental limit for single-copy
measurements in entanglement detection, and provides a general framework to
study the detection of other interesting properties of quantum states, such as
the positivity of partial transpose and the $k$-symmetric extendibility.
Lu, DDC, Iu, HHC & Pjevalica, V 2015, 'Single-stage near-unity power factor AC/DC converter with both regulated bus and output voltages', International Journal of Electronics Letters, vol. 3, no. 2, pp. 77-86.
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© 2014 Taylor & Francis. Recently a single-stage AC/DC converter configuration which combines a boost power factor correction (PFC) circuit with a two-transistor DC/DC converter is presented. The converter achieves high power factor (PF), bus voltage regulation and output voltage regulation simultaneously that are hardly achieved in conventional single-stage power-factor-corrected (S2PFC) converters. The converter is also able to work in stand-by mode to reduce power loss. To improve the converter performance further, this letter introduces a dual current-mode pulse-width modulation controller for this converter configuration to optimise the PF. Experimental results of a 24 VDC/100 W hardware prototype on a boost converter integrated with a two-switch forward converter are presented. The measured PF is above 0.99 at full load. The conversion efficiency is above 87% throughout the entire input AC line voltage range (100–240) Vrms and output load range (0.5–4.5) A.
Lu, J, Behbood, V, Hao, P, Zuo, H, Xue, S & Zhang, G 2015, 'Transfer learning using computational intelligence: A survey', KNOWLEDGE-BASED SYSTEMS, vol. 80, pp. 14-23.
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Abstract Transfer learning aims to provide a framework to utilize previously-acquired
knowledge to solve new but similar problems much more quickly and effectively. In contrast
to classical machine learning methods, transfer learning methods exploit the knowledge
accumulated from data in auxiliary domains to facilitate predictive modeling consisting of
different data patterns in the current domain. To improve the performance of existing transfer
learning methods and handle the knowledge transfer process in real-world systems, ...
Lu, J, Wu, D, Mao, M, Wang, W & Zhang, G 2015, 'Recommender system application developments: A survey', DECISION SUPPORT SYSTEMS, vol. 74, pp. 12-32.
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Lu, J, Zheng, Z, Zhang, G, He, Q & Shi, Z 2015, 'A new solution algorithm for solving rule-sets based bilevel decision problems', CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE, vol. 27, no. 4, pp. 830-854.
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Bilevel decision addresses compromises between two interacting decision entities within a given hierarchical complex system under distributed environments. Bilevel programming typically solves bilevel decision problems. However, formulation of objectives and constraints in mathematical functions is required, which are difficult, and sometimes impossible, in real-world situations because of various uncertainties. Our study develops a rule-set based bilevel decision approach, which models a bilevel decision problem by creating, transforming and reducing related rule sets. This study develops a new rule-sets based solution algorithm to obtain an optimal solution from the bilevel decision problem described by rule sets. A case study and a set of experiments illustrate both functions and the effectiveness of the developed algorithm in solving a bilevel decision problem. © 2012 John Wiley & Sons, Ltd.
Lu, M, Wang, S, Sloan, SW, Indraratna, B & Xie, K 2015, 'Nonlinear radial consolidation of vertical drains under a general time-variable loading', International Journal for Numerical and Analytical Methods in Geomechanics, vol. 39, no. 1, pp. 51-62.
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Lu, M, Wang, S, Sloan, SW, Sheng, D & Xie, K 2015, 'Nonlinear consolidation of vertical drains with coupled radial–vertical flow considering well resistance', Geotextiles and Geomembranes, vol. 43, no. 2, pp. 182-189.
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Lu, X, Nejati, S, Choo, Y, Osuji, CO, Ma, J & Elimelech, M 2015, 'Elements Provide a Clue: Nanoscale Characterization of Thin-Film Composite Polyamide Membranes', ACS Applied Materials & Interfaces, vol. 7, no. 31, pp. 16917-16922.
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Lu, Z, Roohani-Esfahani, S-I, Li, J & Zreiqat, H 2015, 'Synergistic effect of nanomaterials and BMP-2 signalling in inducing osteogenic differentiation of adipose tissue-derived mesenchymal stem cells', Nanomedicine: Nanotechnology, Biology and Medicine, vol. 11, no. 1, pp. 219-228.
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Lukosch, S, Billinghurst, M, Alem, L & Kiyokawa, K 2015, 'Collaboration in Augmented Reality', COMPUTER SUPPORTED COOPERATIVE WORK-THE JOURNAL OF COLLABORATIVE COMPUTING, vol. 24, no. 6, pp. 515-525.
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© 2015, The Author(s). Augmented Reality (AR) is a technology that allows users to view and interact in real time with virtual images seamlessly superimposed over the real world. AR systems can be used to create unique collaborative experiences. For example, co-located users can see shared 3D virtual objects that they interact with, or a user can annotate the live video view of a remote worker, enabling them to collaborate at a distance. The overall goal is to augment the face-to-face collaborative experience, or to enable remote people to feel that they are virtually co-located. In this special issue on collaboration in augmented reality, we begin with the visions of science fiction authors of future technologies that might significantly improve collaboration, then introduce research articles which describe progress towards these visions, finally we outline a research agenda discussing the work still to be done.
Luo, F, Jiang, C, Du, J, Yuan, J, Ren, Y, Yu, S & Guizani, M 2015, 'A Distributed Gateway Selection Algorithm for UAV Networks', IEEE Transactions on Emerging Topics in Computing, vol. 3, no. 1, pp. 22-33.
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Luo, L, Jiang, Z, Wei, D, Manabe, K-I, Sato, H, He, X & Li, P 2015, 'An experimental and numerical study of micro deep drawing of SUS304 circular cups', Manufacturing Review, vol. 2, pp. 27-27.
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© L. Luo et al., published by EDP Sciences, 2015. Micro deep drawing is a promising technology for mass production of complex 3D micro metal products. Significant size effects at a micro scale, however, obstruct application of this technology and block utilisation of traditional finite element method (FEM). Therefore, a micro tensile test system was developed to obtain accurate material properties considering size effects. Subsequently, a Voronoi blank model was developed for the micro scale simulation. Moreover, micro deep drawing experiments were conducted and their results were compared with the simulation results. The simulation results have a good agreement with the experimental data. Furthermore, the wrinkling at the cup mouth increases with the growth of grain sizes on the SUS304 sheets.
Luo, Q & Tong, L 2015, 'Design and testing for shape control of piezoelectric structures using topology optimization', Engineering Structures, vol. 97, pp. 90-104.
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Luo, Q & Tong, L 2015, 'Optimal Designs for Vibrating Structures Using a Moving Isosurface Threshold Method With Experimental Study', Journal of Vibration and Acoustics, vol. 137, no. 6.
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This paper studies optimal designs for vibrating structures using a moving isosurface threshold method (MIST). In the present study, a combination of strain and kinetic energy densities is selected as a response function of natural frequency and then formulations to maximize a specific frequency, frequency separation, and average-mean are derived. An efficient algorithm is developed to find a moving isosurface threshold level for evolving the design boundary and updating the weighting factor. The present algorithm coupled with commercial finite element analysis (FEA) software is used to study optimal designs for vibrating structures. The obtained optimal designs are fabricated and the experimental tests are conducted to validate the optimal topologies.
Luo, Q & Tong, L 2015, 'Structural topology optimization for maximum linear buckling loads by using a moving iso-surface threshold method', Structural and Multidisciplinary Optimization, vol. 52, no. 1, pp. 71-90.
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Luo, W, Hai, FI, Kang, J, Price, WE, Guo, W, Ngo, HH, Yamamoto, K & Nghiem, LD 2015, 'Effects of salinity build-up on biomass characteristics and trace organic chemical removal: Implications on the development of high retention membrane bioreactors', Bioresource Technology, vol. 177, pp. 274-281.
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Luo, W, Hai, FI, Kang, J, Price, WE, Nghiem, LD & Elimelech, M 2015, 'The role of forward osmosis and microfiltration in an integrated osmotic-microfiltration membrane bioreactor system', Chemosphere, vol. 136, pp. 125-132.
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Luo, W, Hai, FI, Price, WE & Nghiem, LD 2015, 'Water extraction from mixed liquor of an aerobic bioreactor by forward osmosis: Membrane fouling and biomass characteristics assessment', Separation and Purification Technology, vol. 145, pp. 56-62.
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Luo, Y, Jiang, Q, Ngo, HH, Nghiem, LD, Hai, FI, Price, WE, Wang, J & Guo, W 2015, 'Evaluation of micropollutant removal and fouling reduction in a hybrid moving bed biofilm reactor–membrane bioreactor system', Bioresource Technology, vol. 191, pp. 355-359.
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Ma, J, Fan, F, Wu, C & Zhi, X 2015, 'Counter-intuitive collapse of single-layer reticulated domes subject to interior blast loading', Thin-Walled Structures, vol. 96, pp. 130-138.
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Ma, Q, Luo, X, Xuan, J & Liu, H 2015, 'Bayesian Based Type Discrimination of Web Events.', J. Web Eng., vol. 14, no. 5-6, pp. 525-544.
Ma, X, Liu, D, Zhang, J & Xin, J 2015, 'A fast affine-invariant features for image stitching under large viewpoint changes', Neurocomputing, vol. 151, pp. 1430-1438.
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Maerz, NH, Youssef, AM, Pradhan, B & Bulkhi, A 2015, 'Remediation and mitigation strategies for rock fall hazards along the highways of Fayfa Mountain, Jazan Region, Kingdom of Saudi Arabia', Arabian Journal of Geosciences, vol. 8, no. 5, pp. 2633-2651.
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Mahamedi, B, Sanaye‐Pasand, M, Azizi, S & Zhu, JG 2015, 'Unsynchronised fault‐location technique for three‐terminal lines', IET Generation, Transmission & Distribution, vol. 9, no. 15, pp. 2099-2107.
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This study describes a new fault-location technique using negative-sequence voltage for three-terminal lines.
The ratios between the negative-sequence voltage magnitudes measured at each terminal are utilised to first
determine the faulted section and then to estimate the exact fault location within the section. Since the current data is
not deployed, the influence of inherent errors of current transformers can be avoided. The proposed method can
accurately locate the unbalanced faults, that is, single-phase-to-ground, double-phase-to-ground, and phase-to-phase
faults, regardless of the fault resistance and pre-fault conditions and without any need to identify the fault type. The
method requires only the negative-sequence reactance behind each terminal which can be estimated by the shortcircuit
analysis with an acceptable accuracy. Reliability and practicality of the proposed method make it an attractive
option to include in numerical protective relays. Simulation experiments with different fault cases reveal the capability
of the proposed method.
Majeed, T, Lotfi, F, Phuntsho, S, Yoon, JK, Kim, K & Shon, HK 2015, 'Performances of PA hollow fiber membrane with the CTA flat sheet membrane for forward osmosis process', DESALINATION AND WATER TREATMENT, vol. 53, no. 7, pp. 1744-1754.
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Fertilizer drawn forward osmosis desalination has been earlier explored using flat sheet forward osmosis (FSFO) membrane, which highlighted flux and reverse solute flux (RSF) performance. This study evaluated and compared the performances of a newly developed polyamide (PA)-based hollow fiber forward osmosis (HFFO) membrane and cellulose triacetate FSFO membrane. Both membranes were evaluated for pure water permeability, salt rejection rate (1,000 mg/L NaCl) in RO mode. Physical structure and morphology were further examined using scanning electron micrograph (SEM). SEM images revealed that the overall thickness of the HFFO and FSFO membranes was 152 and 91 μm, respectively. Flux and RSF performances of these two membranes were evaluated using nine fertilizer DS as NH4Cl, KNO3, KCl, (NH4)2SO4, Ca(NO3)2, NH4H2PO4, (NH4)2HPO4, NaNO3, and CO(NH2)2 in active layer–feed solution membrane orientation. HFFO membrane clearly showed better performance for water flux with five DS ((NH4)2SO4, NH4H2PO4, KNO3, CO(NH2)2, and NaNO3) as they showed up to 66% increase in flux. Beside thick PA active layer of HFFO membrane, higher water flux outcome for forward osmosis (FO) process further highlighted the significance of the nature of support layer structure, the thickness and surface chemistry of the active layer of the membrane in the FO process. On the other hand, most DS showed lower RSF with HFFO membrane with the exception of Ca(NO3)2. Most of DS having monovalent cation and anions showed significantly lower RSF with HFFO membrane.
Majeed, T, Phuntsho, S, Sahebi, S, Kim, JE, Yoon, JK, Kim, K & Shon, HK 2015, 'Influence of the process parameters on hollow fiber-forward osmosis membrane performances', DESALINATION AND WATER TREATMENT, vol. 54, no. 4-5, pp. 817-828.
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Continued efforts are made in improving the performance of the low-cost forward osmosis (FO) membrane process which utilizes naturally available osmotic pressure of the draw solution (DS) as the driving force. Selection of a suitable DS and development of a better performing membrane remained the main research focus. In this study, the performance of a hollow fiber forward osmosis (HFFO) membrane was evaluated with respect to various operating conditions such as different cross-flow directions, membrane orientation, solution properties, and solution flow rates (Reynolds number). The study observed that operating parameters significantly affect the performance of the FO process. FO comparatively showed better performance at counter-current orientation. NaCl, KCl, and NH4Cl were evaluated as DS carrying common anion. Properties of the anionic part of the DS were found important for flux outcome, whereas reverse solute flux (RSF) was largely influenced by the properties of DS cationic part. FO was operated at different DS and feed solution (FS) flow rates and FO outcome was assessed for varying DS and FS Reynolds number ratio. FO showed better flux outcome as Re ratio for DS and FS decreases and vice versa. Results indicated that by adjusting FO processes conditions, HFFO membrane could achieve significantly lower specific RSF and higher water flux outcome. It was observed that using 2 M NaCl as DS and deionized water as FS, HFFO successfully delivered flux of 62.9 LMH which is significantly high compared to many FO membranes reported in the literature under the active layer-DS membrane orientation mode.
Majeed, T, Sahebi, S, Lotfi, F, Kim, JE, Phuntsho, S, Tijing, LD & Shon, HK 2015, 'Fertilizer-drawn forward osmosis for irrigation of tomatoes', DESALINATION AND WATER TREATMENT, vol. 53, no. 10, pp. 2746-2759.
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Makki Alamdari, M, Li, J & Samali, B 2015, 'Damage identification using 2-D discrete wavelet transform on extended operational mode shapes', Archives of Civil and Mechanical Engineering, vol. 15, no. 3, pp. 698-710.
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Makki Alamdari, M, Samali, B & Li, J 2015, 'Damage localization based on symbolic time series analysis', Structural Control and Health Monitoring, vol. 22, no. 2, pp. 374-393.
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The objective of this paper is to localize damage in a single or multiple state at early stages of development on the basis of the principles of symbolic dynamics. Symbolic time series analysis (STSA) of noise-contaminated responses is used for feature extraction to detect and localize a gradually evolving deterioration in the structure according to the changes in the statistical behaviour of symbol sequences. Basically, in STSA, statistical features of the symbol sequence can be used to describe the dynamic status of the system. Symbolic dynamics has some useful characteristics making it highly demanded for implementation in real-time observation application such as SHM. First, it significantly reduces the dimension of information and provides information-rich representation of the underlying data. Second, symbolic dynamics and the set of statistical measures built upon it represent a solid framework to address the main challenges of the analysis of nonstationary time data. Finally, STSA often allows capturing the main features of the underlying system whilst alleviating the effects of harmful noise. The method presented in this paper consists of four primary steps: (i) acquisition of the time series data; (ii) creating the symbol space to produce symbol sequences on the basis of the wavelet transformed version of time series data; (iii) developing the symbol probability vectors to achieve anomaly measures; and (iv) localizing damage on the basis of any sudden variation in anomaly measure of different locations. The method was applied on a flexural beam and a 2-D planar truss bridge subjected to varying Gaussian excitation in presence of 2% white noise to examine the efficiency and limitations of the method. Simulation results under various damage conditions confirmed the efficiency of the proposed approach for localization of gradually evolving deterioration in the structure; however, for the future work, the method needs to be verified by experimental data.
maleki najafabadi, S, Soffianian, A, Rahdari, V, Amiri, F, Pradhan, B & Tabatabaei, T 2015, 'Geospatial modeling to identify the effects of anthropogenic processes on landscape pattern change and biodiversity', Arabian Journal of Geosciences, vol. 8, no. 3, pp. 1557-1569.
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Mandal, R, Roy, PP, Pal, U & Blumenstein, M 2015, 'Multi-lingual date field extraction for automatic document retrieval by machine', Information Sciences, vol. 314, pp. 277-292.
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© 2014 Elsevier Inc. All rights reserved. Robotic intelligence has recently received significant attention in the research community. Application of such artificial intelligence can be used to perform automatic document retrieval and interpretation by a robot through query. So, it is necessary to extract the key information from the document based on the query to produce the desired feedback. For this purpose, in this paper we propose a system for automatic date field extraction from multi-lingual (English, Devnagari and Bangla scripts) handwritten documents. The date is a key piece of information, which can be used in various robotic applications such as date-wise document indexing/retrieval. In order to design the system, first the script of the document is identified, and based on the identified script, word components of each text line are classified into month and non-month classes using word-level feature extraction and classification. Next, non-month words are segmented into individual components and labelled into one of text, digit, punctuation or contraction categories. Subsequently, the date patterns are searched using the labelled components. Both numeric and semi-numeric regular expressions have been used for date part extraction. Dynamic Time Warping (DTW) and profile feature-based approaches are used for classification of month/non-month words. Other date components such as numerals and punctuation marks are recognised using a gradient-based feature and Support Vector Machine (SVM) classifier. The experiments are performed on English, Devnagari and Bangla document datasets and the encouraging results obtained from the system indicate the effectiveness of the proposed system.
Marcias, G, Takayama, K, Pietroni, N, Panozzo, D, Sorkine-Hornung, O, Puppo, E & Cignoni, P 2015, 'Data-driven interactive quadrangulation.', ACM Trans. Graph., vol. 34, pp. 65:1-65:1.
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Mareishi, S, Kalhori, H, Rafiee, M & Hosseini, SM 2015, 'Nonlinear forced vibration response of smart two-phase nano-composite beams to external harmonic excitations', Curved and Layered Structures, vol. 2, no. 1, pp. 150-161.
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Abstract
This paper presents an analytical solution for nonlinear free and forced vibration response of smart laminated nano-composite beams resting on nonlinear elastic foundation and under external harmonic excitation. The structure is under a temperature change and an electric excitation through the piezoelectric layers. Different distribution patterns of the single walled aligned and straight carbon nanotubes (SWCNTs) through the thickness of the beam are considered. The beam complies with Euler-Bernoulli beam theory and von Kármán geometric nonlinearity. The nonlinearity is due to the mid-plane stretching of the beam and the nonlinear stiffness of the elastic foundation. The Multiple Time Scales perturbation scheme is used to perform the nonlinear dynamical analysis of functionally graded carbon nanotube-reinforced beams. Analytical expressions of the nonlinear natural frequencies, nonlinear dynamic response and frequency response of the system in the case of primary resonance have been presented. The effects of different parameters including applied voltage, temperature change, beam geometry, the volume fraction and distribution pattern of the carbon nanotubes on the nonlinear natural frequencies and frequency-response curves are presented. It is found that the volume fractions of SWCNTs as well as their distribution pattern significantly change the behavior of the system.
Martín, F, Miró, JV & Moreno, L 2015, 'RGB-D DE-based Scan Matching: Exploiting Colour Properties in Registration', Journal of Intelligent & Robotic Systems, vol. 80, no. 1, pp. 71-85.
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Masum, BM, Masjuki, HH, Kalam, MA, Palash, SM & Habibullah, M 2015, 'Effect of alcohol–gasoline blends optimization on fuel properties, performance and emissions of a SI engine', Journal of Cleaner Production, vol. 86, pp. 230-237.
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Matekovits, L, Thalakotuna, D, Esselle, KP, Hay, SG & Heimlich, M 2015, 'EQUIVALENT-CIRCUIT MODELS FOR EFFICIENT TRANSMISSION AND DISPERSION ANALYSES OF MULTI-STATE PERIODIC STRUCTURES', Progress In Electromagnetics Research, vol. 153, pp. 93-102.
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Mathieson, L 2015, 'Graph Editing Problems with Extended Regularity Constraints', Theoretical Computer Science, vol. 677, pp. 56-68.
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Graph editing problems offer an interesting perspective on sub- and
supergraph identification problems for a large variety of target properties.
They have also attracted significant attention in recent years, particularly in
the area of parameterized complexity as the problems have rich parameter
ecologies.
In this paper we examine generalisations of the notion of editing a graph to
obtain a regular subgraph. In particular we extend the notion of regularity to
include two variants of edge-regularity along with the unifying constraint of
strong regularity. We present a number of results, with the central observation
that these problems retain the general complexity profile of their
regularity-based inspiration: when the number of edits $k$ and the maximum
degree $r$ are taken together as a combined parameter, the problems are
tractable (i.e. in \FPT{}), but are otherwise intractable.
We also examine variants of the basic editing to obtain a regular subgraph
problem from the perspective of parameterizing by the treewidth of the input
graph. In this case the treewidth of the input graph essentially becomes a
limiting parameter on the natural $k+r$ parameterization.
Mazzolini, AP & Daniel, SA 2015, 'Improving students' understanding by using on-going education research to refine active learning activities in a first-year electronics course', Nuovo Cimento della Societa Italiana di Fisica C, vol. 38, no. 3.
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Interactive Lecture Demonstrations (ILDs) have been used across introductory university physics as a successful active learning (AL) strategy to improve students' conceptual understanding. We have developed ILDs for more complex topics in our first-year electronics course. In 2006 we began developing ILDs to improve students' conceptual understanding of Operational Amplifiers (OAs) and negative feedback in amplification circuits. The ILDs were used after traditional lecture instruction to help students consolidate their understanding. We developed a diagnostic test, to be administered to students both before and after the ILDs, as a measure of how effective the ILDs were in improving students' understanding.
McDonald, C & McGloin, D 2015, 'Bubble wrap for optical trapping and cell culturing', Biomedical Optics Express, vol. 6, no. 10, pp. 3757-3757.
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McDonald, C & McGloin, D 2015, 'Low-cost optical manipulation using hanging droplets of PDMS', RSC Advances, vol. 5, no. 68, pp. 55561-55565.
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A low-cost optical manipulation system is realised by using simple microfabricated PDMS components coupled to a smartphone camera for imaging.
McGloin, D 2015, 'Cellular lasers', Nature Photonics, vol. 9, no. 9, pp. 559-560.
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McKenzie, TG, Fu, Q, Wong, EHH, Dunstan, DE & Qiao, GG 2015, 'Visible Light Mediated Controlled Radical Polymerization in the Absence of Exogenous Radical Sources or Catalysts', Macromolecules, vol. 48, no. 12, pp. 3864-3872.
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McKenzie, TG, Wong, EHH, Fu, Q, Sulistio, A, Dunstan, DE & Qiao, GG 2015, 'Controlled Formation of Star Polymer Nanoparticles via Visible Light Photopolymerization', ACS Macro Letters, vol. 4, no. 9, pp. 1012-1016.
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McLaughlan, RG, Almabrok, MH & Vessalas, K 2015, 'Evaluating the effect of mixing method on the performance of mortar containing oil', International Journal of Engineering Science Invention, vol. 4, no. 3, pp. 58-64.
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There is a vital need for managing oily materials resulting from the petroleum industry as their
toxic and persistent nature threatens the environment. In view of oil waste remediation, current treatment
technologies are either cost prohibitive and/or the treated products have to be sent to landfill without any
potential end-use. Cement-based stabilisation/solidification of oil contaminated materials is an emerging
method however there is limited knowledge in terms of the effect of the mixing method on the properties of the
resultant cementitious mix. For this purpose, the water wet (WW) and oil wet (OW) protocol was devised to see
if the observed behaviour of the mortar was a function of the mixing method rather than the ingredients. A
cement-based mortar incorporating a mineral oil addition of up to 10% of the aggregates mass was used. The
results indicated that the mixing method has only a small effect on the fresh and hardened properties. Increased
oil content in the cement mortar was found to increase the flow and setting time whereas there was decreased
wet density and air content irrespective of the type of the mixing method used. The compressive strength
decreased by 75% and 77% for water wet and oil wet respectively compared to the control at 28 days of age.
The mixing method has a relatively small impact overall on the hydration process. The calorimetry results
showed that both mixing methods followed the same trend whereby the hydration is inhibited due to oil
incorporation.
McLaughlan, RG, Hossain, SMG & Al-Mashaqbeh, OA 2015, 'Zinc sorption by permanganate treated pine chips', Journal of Environmental Chemical Engineering, vol. 3, no. 3, pp. 1539-1545.
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© 2015 Elsevier Ltd. All rights reserved. The sorption equilibria and kinetics of zinc from aqueous solution on both untreated and permanganate treated pine chips were investigated. The sorption kinetics were best described by pseudo-second-order equation and the sorption isotherms were well fitted by a Langmuir model for both untreated and treated pine chips. Zinc sorption increased from 1.2 mg g -1 in untreated samples to 3.9 mg g -1 for the treated pine chips. Analysis shows that the carboxylic content increased after oxidative treatment of wood sorbents. This was responsible for the improved sorption of zinc onto the pine chips. The permanganate-wood reaction rate in batch experiments was biphasic first-order with an initial rate (0-25 min) and then a slower rate (25-807 min). The initial rates were approximately 3 times greater than the later stage rates. The reaction rates was also particle size dependent with the rate for 4.75 mm pine chips, 11-19% less than that of the 1.18 mm pine chips. Rate limiting mechanisms included intra-particle mechanism of MnO 4 - interaction with pine chips is complex and consisting of surface external mass transfer as well as intra-particle diffusion. Rate-limiting reactions in the column caused the shape of the breakthrough curve to exhibit tailing.
Menon, AK, Cai, C, Wang, W, Wen, T & Chen, F 2015, 'Fine-grained OD estimation with automated zoning and sparsity regularisation', Transportation Research Part B: Methodological, vol. 80, pp. 150-172.
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Merigó, JM, Engemann, KJ & Gil-Lafuente, AM 2015, 'Guest Editorial: Intelligent Systems in Business and Economics', Cybernetics and Systems, vol. 46, no. 3-4, pp. 145-149.
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Merigó, JM, Gil-Lafuente, AM & Yager, RR 2015, 'An overview of fuzzy research with bibliometric indicators', Applied Soft Computing, vol. 27, pp. 420-433.
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Merigó, JM, Guillén, M & Sarabia, JM 2015, 'The Ordered Weighted Average in the Variance and the Covariance', International Journal of Intelligent Systems, vol. 30, no. 9, pp. 985-1005.
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Merigó, JM, Mas-Tur, A, Roig-Tierno, N & Ribeiro-Soriano, D 2015, 'A bibliometric overview of the Journal of Business Research between 1973 and 2014', Journal of Business Research, vol. 68, no. 12, pp. 2645-2653.
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Merigó, JM, Palacios-Marqués, D & del Mar Benavides-Espinosa, M 2015, 'Aggregation methods to calculate the average price', Journal of Business Research, vol. 68, no. 7, pp. 1574-1580.
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Merigó, JM, Palacios-Marqués, D & Ribeiro-Navarrete, B 2015, 'Aggregation systems for sales forecasting', Journal of Business Research, vol. 68, no. 11, pp. 2299-2304.
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Mi, N, Chen, Y, Wang, S, Chen, M, Zhao, M, Yang, G, Ma, M, Su, Q, Luo, S, Shi, J, Xu, J, Guo, Q, Gao, N, Sun, Y, Chen, Z & Yu, L 2015, 'CapZ regulates autophagosomal membrane shaping by promoting actin assembly inside the isolation membrane', Nature Cell Biology, vol. 17, no. 9, pp. 1112-1123.
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A fundamental question regarding autophagosome formation is how the shape of the double-membrane autophagosomal vesicle is generated. Here we show that in mammalian cells assembly of an actin scaffold inside the isolation membrane (the autophagosomal precursor) is essential for autophagosomal membrane shaping. Actin filaments are depolymerized shortly after starvation and actin is assembled into a network within the isolation membrane. When formation of actin puncta is disrupted by an actin polymerization inhibitor or by knocking down the actin-capping protein CapZβ, isolation membranes and omegasomes collapse into mixed-membrane bundles. Formation of actin puncta is PtdIns(3)P dependent, and inhibition of PtdIns(3)P formation by treating cells with the PI(3)K inhibitor 3-MA, or by knocking down Beclin-1, abolishes the formation of actin puncta. Binding of CapZ to PtdIns(3)P, which is enriched in omegasomes, stimulates actin polymerization. Our findings illuminate the mechanism underlying autophagosomal membrane shaping and provide key insights into how autophagosomes are formed.
Milani, D, Khalilpour, R, Zahedi, G & Abbas, A 2015, 'A model-based analysis of CO2 utilization in methanol synthesis plant', Journal of CO2 Utilization, vol. 10, pp. 12-22.
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Mirhassani, S, Ong, HC, Chong, WT & Leong, KY 2015, 'Advances and challenges in grid tied photovoltaic systems', Renewable and Sustainable Energy Reviews, vol. 49, pp. 121-131.
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Mirmomeni, M, Heidarpour, A, Zhao, X-L, Hutchinson, CR, Packer, JA & Wu, C 2015, 'Mechanical properties of partially damaged structural steel induced by high strain rate loading at elevated temperatures – An experimental investigation', International Journal of Impact Engineering, vol. 76, pp. 178-188.
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Mirzahosseini, M, Najjar, YM, Alavi, AH & Gandomi, AH 2015, 'Next-Generation Models for Evaluation of the Flow Number of Asphalt Mixtures', International Journal of Geomechanics, vol. 15, no. 6, pp. 04015009-04015009.
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Miyazaki, Y, Arakane, Y & Miyanaga, Y 2015, 'Robust Phrase Speech Recognition for Noisy Acoustically Similar Words', Journal of Signal Processing, vol. 19, no. 5, pp. 195-207.
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Mofijur, M, Hazrat, MA, Rasul, MG & Mahmudul, HM 2015, 'Comparative Evaluation of Edible and Non-edible Oil Methyl Ester Performance in a Vehicular Engine', Energy Procedia, vol. 75, pp. 37-43.
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Mofijur, M, Masjuki, HH, Kalam, MA, Ashrafur Rahman, SM & Mahmudul, HM 2015, 'Energy scenario and biofuel policies and targets in ASEAN countries', Renewable and Sustainable Energy Reviews, vol. 46, pp. 51-61.
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Mofijur, M, Masjuki, HH, Kalam, MA, Rasul, MG, Atabani, AE, Hazrat, MA & Mahmudul, HM 2015, 'Effect of Biodiesel-diesel Blending on Physico-chemical Properties of Biodiesel Produced from Moringa Oleifera', Procedia Engineering, vol. 105, pp. 665-669.
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Mofijur, M, Rasul, MG & Hyde, J 2015, 'Recent Developments on Internal Combustion Engine Performance and Emissions Fuelled With Biodiesel-Diesel-Ethanol Blends', Procedia Engineering, vol. 105, pp. 658-664.
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Mofijur, M, Rasul, MG, Hyde, J & Bhuyia, MMK 2015, 'Role of Biofuels on IC Engines Emission Reduction', Energy Procedia, vol. 75, pp. 886-892.
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Moghaddam, DD, Rezaei, M, Pourghasemi, HR, Pourtaghie, ZS & Pradhan, B 2015, 'Groundwater spring potential mapping using bivariate statistical model and GIS in the Taleghan Watershed, Iran', Arabian Journal of Geosciences, vol. 8, no. 2, pp. 913-929.
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Mohammadi, I & Khabbaz, H 2015, 'Shrinkage performance of Crumb Rubber Concrete (CRC) prepared by water-soaking treatment method for rigid pavements', Cement and Concrete Composites, vol. 62, pp. 106-116.
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Mojsilović, N & Stewart, MG 2015, 'Probability and structural reliability assessment of mortar joint thickness in load-bearing masonry walls', Structural Safety, vol. 52, no. PB, pp. 209-218.
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Mortar joint thickness has a significant effect on capacity of structural masonry. Data on mortar joint thickness (bed and head joints) were collected from twelve typical storey-high walls at three different building sites and from four walls built in a research laboratory in Switzerland. The data obtained allowed an analysis of the spatial distribution of the joint thickness in each wall and the characterization of the probability distribution of joint thickness. The data has been statistically analysed and the results discussed: the central and dispersion measures were calculated and several probability distributions have been fitted to the sample data and subsequently tested using standard methods of statistical theory. Further, the results obtained from all four building sites have been compared, thus providing quantitative information about the quality of the work on different sites. The presented probabilistic information is then used to define reliability-based limit state specifications where the joint thickness acts as an important random variable. The reliability of the structural masonry subjected to a concentric normal force found that probabilistic modelling of bed joint thickness results in higher reliability indices.
Moore, I & Sheng, D 2015, 'Note of appreciation / Note de reconnaissance', Canadian Geotechnical Journal, vol. 52, no. 12, pp. iii-v.
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Mosarof, MH, Kalam, MA, Masjuki, HH, Ashraful, AM, Rashed, MM, Imdadul, HK & Monirul, IM 2015, 'Implementation of palm biodiesel based on economic aspects, performance, emission, and wear characteristics', Energy Conversion and Management, vol. 105, pp. 617-629.
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Mueller, J & Stewart, MG 2015, 'Terrorism, counterterrorism, and the Internet: The American cases', Dynamics of Asymmetric Conflict, vol. 8, no. 2, pp. 176-190.
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This article assesses the cases that have come to light since 9/11 of Islamist extremist terrorism, whether based in the United States or abroad, in which the United States itself has been, or apparently has been, targeted. Information from them is used to evaluate how the Internet (including various forms of electronic communication) has affected several aspects of the terrorism enterprise in the United States: radicalization, communication, organization, and the gathering of information. In general, it is found that the Internet has not been particularly important. Although it has been facilitating in some respects, it has scarcely ever been necessary. In some respects, the Internet more fully aids efforts to police terrorism – although this is mainly due to the incompetence and amateurishness of would-be terrorists. In other respects, however, the Internet, and the big data compilations it makes possible, greatly increase the costs and complications of the counterterrorism quest.
Muhammad, KSB & Lu, DD-C 2015, 'ZCS Bridgeless Boost PFC Rectifier Using Only Two Active Switches', IEEE Transactions on Industrial Electronics, vol. 62, no. 5, pp. 2795-2806.
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Mulya Saputra, Y & Yun, J-H 2015, 'Performance Analysis of Adaptive Radio Activation in Dual-Radio Aggregation System', Journal of the Korea Institute of Information and Communication Engineering, vol. 19, no. 8, pp. 1901-1907.
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Muniz, KM, Woodside, AG & Sood, S 2015, 'Consumer storytelling of brand archetypal enactments', International Journal of Tourism Anthropology, vol. 4, no. 1, pp. 67-67.
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Musial, K, Brodka, P & Magnani, M 2015, 'Social Network Analysis in Applications', AI Communications, vol. 29, no. 1, pp. 55-56.
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Mustapha, S, Hu, Y, Nguyen, K, Alamdari, MM, Runcie, P, Dackermann, U, Nguyen, VV, Li, J & Ye, L 2015, 'Pattern recognition based on time series analysis using vibration data for structural health monitoring in civil structures', Electronic Journal of Structural Engineering, vol. 14, no. 1, pp. 106-115.
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A statistical pattern recognition technique was developed based on the time series analysis to detect cracking in steel reinforced concrete structures using vibration measurements. The technique has been developed for the Sydney Harbour Bridge. The measurements were collected from single and tri-axial accel-erometers, which were integrated into sensor nodes that were developed at the National ICT Australia. The approach is based on two staged Auto-Regressive (AR) and Auto-Regressive with exogenous inputs (ARX) prediction models. The variation between the residual errors obtained from the intact and damaged states were used to define a Damage Index (DI) capable of identifying physical changed which could be due to structural damage. The effect of the severity of damage on the deviation of the AR-ARX model from its in-tact state was also scrutinised. The results of the field trial and the laboratory testing demonstrated the ability of the approach in identifying the presence of cracking and handling large volumes of data in a very efficient manner.
Naderpour, M, Lu, J & Zhang, G 2015, 'A human-system interface risk assessment method based on mental models', SAFETY SCIENCE, vol. 79, pp. 286-297.
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Naderpour, M, Lu, J & Zhang, G 2015, 'An abnormal situation modeling method to assist operators in safety-critical systems', RELIABILITY ENGINEERING & SYSTEM SAFETY, vol. 133, pp. 33-47.
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One of the main causes of accidents in safety-critical systems is human error. In order to reduce human errors in the process of handling abnormal situations that are highly complex and mentally taxing activities, operators need to be supported, from a cognitive perspective, in order to reduce their workload, stress, and the consequent error rate. Of the various cognitive activities, a correct understanding of the situation, i.e. situation awareness (SA), is a crucial factor in improving performance and reducing errors. Despite the importance of SA in decision-making in time- and safety-critical situations, the difficulty of SA modeling and assessment means that very few methods have as yet been developed. This study confronts this challenge, and develops an innovative abnormal situation modeling (ASM) method that exploits the capabilities of risk indicators, Bayesian networks and fuzzy logic systems. The risk indicators are used to identify abnormal situations, Bayesian networks are utilized to model them and a fuzzy logic system is developed to assess them. The ASM method can be used in the development of situation assessment decision support systems that underlie the achievement of SA. The performance of the ASM method is tested through a real case study at a chemical plant.
Naderpour, M, Nazir, S & Lu, J 2015, 'The role of situation awareness in accidents of large-scale technological systems', PROCESS SAFETY AND ENVIRONMENTAL PROTECTION, vol. 97, pp. 13-24.
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Naidu, G, Jeong, S & Vigneswaran, S 2015, 'Interaction of humic substances on fouling in membrane distillation for seawater desalination', Chemical Engineering Journal, vol. 262, pp. 946-957.
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Naik, GR & Nguyen, HT 2015, 'Nonnegative Matrix Factorization for the Identification of EMG Finger Movements: Evaluation Using Matrix Analysis', IEEE Journal of Biomedical and Health Informatics, vol. 19, no. 2, pp. 478-485.
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Surface Electromyography (sEMG) is widely used in evaluating the functional status of the hand to assist in hand gesture recognition, prosthetics and rehabilitation applications. The sEMG is a non-invasive, easy to record signal of superficial muscles from the skin surface. Considering the non-stationary characteristics of sEMG, recent feature selection of hand gesture recognition using sEMG signals necessitate designers to use Nonnegative Matrix factorization (NMF) based methods. This method exploits both the additive and sparse nature of signals by extracting accurate and reliable measurements of sEMG features using a minimum number of sensors. The testing has been conducted for simple and complex finger flexions using several experiments with Artificial Neural Network (ANN) classification scheme. It is shown, both by simulation and experimental studies, that the proposed algorithm is able to classify ten finger flexions (five simple and five complex finger flexions) recorded from two sEMG sensors up to 92% (95% for simple and 87% for complex flexions) accuracy. The recognition performances of simple and complex finger flexions are also validated with NMF permutation matrix analysis.
Naik, GR, Baker, KG & Nguyen, HT 2015, 'Dependence Independence Measure for Posterior and Anterior EMG Sensors Used in Simple and Complex Finger Flexion Movements: Evaluation Using SDICA', IEEE Journal of Biomedical and Health Informatics, vol. 19, no. 5, pp. 1689-1696.
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Identification of simple and complex finger flexion movements using surface electromyography (sEMG) and a muscle activation strategy is necessary to control human–computer interfaces such as prosthesis and orthoses. In order to identify these movements, sEMG sensors are placed on both anterior and posterior muscle compartments of the forearm. In general, the accuracy of myoelectric classification depends on several factors, which include number of sensors, features extraction methods, and classification algorithms. Myoelectric classification using a minimum number of sensors and optimal electrode configuration is always a challenging task. Sometimes, using several sensors including high density electrodes will not guarantee high classification accuracy. In this research, we investigated the dependence and independence nature of anterior and posterior muscles during simple and complex finger flexion movements. The outcome of this research shows that posterior parts of the hand muscles are dependent and hence responsible for most of simple finger flexion. On the other hand, this study shows that anterior muscles are responsible for most complex finger flexion. This also indicates that simple finger flexion can be identified using sEMG sensors connected only on anterior muscles (making posterior placement either independent or redundant), and vice versa is true for complex actions which can be easily identified using sEMG sensors on posterior muscles. The result of this study is beneficial for optimal electrode configuration and design of prosthetics and other related devices using a minimum number of sensors.
Nancarrow, P, Mustafa, N, Shahid, A, Varughese, V, Zaffar, U, Ahmed, R, Akther, N, Ahmed, H, AlZubaidy, I, Hasan, S, Elsayed, Y & Sara, Z 2015, 'Technical Evaluation of Ionic Liquid-Extractive Processing of Ultra Low Sulfur Diesel Fuel', Industrial & Engineering Chemistry Research, vol. 54, no. 43, pp. 10843-10853.
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Nemati, S 2015, 'ENVIRONMENTAL PROBLEMS OF IRANIAN LANDFILLS AT SEASIDE OF CASPIAN SEA', International Journal of Geomate, vol. 9, no. 2, pp. 1496-1501.
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This paper focuses on methods of solids and contained liquids management and as a case study, and evaluates the proposed landfill design in Langerood, a city in north of Iran close to Caspian Sea. In addition, the methods of waste management and disposal, environmental conditions of transport stations, kinds of waste and other influential managing parameters in this region are analysed and several solutions are presented. The amount of municipal solid waste (MSW) collected in the province of Gulan is about 35,000 tonnes/day. This province involves 4% of the total population of Iran and about 0.9% of the area of Iran, while it produces 1.4% of total MSW of Iran. There is no valuable estimation on the amount of waste generated by industrial units. Approximately 90% of MSW are discharged directly into the rivers. In addition to compostable materials, about 14,000 tonnes paper and cardboard, 9,700 tonnes plastic and 2,500 tonnes glass are annually being entered into the MSW of this province. This paper presents specific and general recommendations to enhance the solid waste management in the study region. © 2015, International Journal of GEOMATE.
Neshat, A & Pradhan, B 2015, 'An integrated DRASTIC model using frequency ratio and two new hybrid methods for groundwater vulnerability assessment', Natural Hazards, vol. 76, no. 1, pp. 543-563.
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Neshat, A & Pradhan, B 2015, 'Risk assessment of groundwater pollution with a new methodological framework: application of Dempster–Shafer theory and GIS', Natural Hazards, vol. 78, no. 3, pp. 1565-1585.
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Neshat, A, Pradhan, B & Javadi, S 2015, 'Risk assessment of groundwater pollution using Monte Carlo approach in an agricultural region: An example from Kerman Plain, Iran', Computers, Environment and Urban Systems, vol. 50, pp. 66-73.
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Neshat, M & Sepidname, G 2015, 'A new hybrid optimization method inspired from swarm intelligence: Fuzzy adaptive swallow swarm optimization algorithm (FASSO)', Egyptian Informatics Journal, vol. 16, no. 3, pp. 339-350.
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Neupane, K, Sriravindrarajah, R, Baweja, D & Chalmers, D 2015, 'Effect of curing on the compressive strength development in structural grades of geocement concrete', CONSTRUCTION AND BUILDING MATERIALS, vol. 94, pp. 241-248.
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Nghiem, LD, Elters, C, Simon, A, Tatsuya, T & Price, W 2015, 'Coal seam gas produced water treatment by ultrafiltration, reverse osmosis and multi-effect distillation: A pilot study', Separation and Purification Technology, vol. 146, pp. 94-100.
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Ngo, NT, Rujikiatkamjorn, C & Indraratna, B 2015, 'Experimental investigation of coal-fouled ballast stabilised with geogrid', Australian Geomechanics Journal, vol. 50, no. 4, pp. 105-112.
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This paper presents the results of an experimental study of coal-fouled ballast reinforced with geogrid, at various degrees of fouling and subjected to cyclic loading. A novel Track Process Simulation Testing Apparatus was used to realistically simulate fouled rail track conditions. The laboratory results demonstrated that coal fines acted as a lubricant, causing ballast aggregates to displace and rotate and, as a result, increase the deformation of ballast. However, coal fines also reduced ballast breakage somewhat because they fill the voids between the ballast particles and coat surface of ballast aggregates which reduce the inter-particle attrition. The placement of a geogrid at the interface between the ballast and sub-ballast layers provides extra internal confinement and interlocks the grains of ballast in its apertures, which also reduces ballast deformation. Based on laboratory results, a threshold value of VCI=40% is proposed to assist practitioners in conducting track maintenance as fouling beyond this threshold significantly reduces the reinforcement effect of geogrid so that fouled ballast experiences premature dilation leading to track instability. A novel equation incorporating the Void Contaminant Index and number of load cycles is also introduced to predict the deformation of fouled ballast, improve the design of rail tracks and help make the correct decisions with regards to track maintenance.
Nguyen, AH, Ngo, HH, Guo, WS, Pham, TQ, Li, FM, Nguyen, TV & Bui, XT 2015, 'Adsorption of phosphate from aqueous solutions and sewage using zirconium loaded okara (ZLO): Fixed-bed column study', SCIENCE OF THE TOTAL ENVIRONMENT, vol. 523, pp. 40-49.
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Nguyen, DN, Krunz, M & Hanly, SV 2015, 'Distributed Bargaining Mechanisms for MIMO Dynamic Spectrum Access Systems', IEEE Transactions on Cognitive Communications and Networking, vol. 1, no. 1, pp. 113-127.
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Dynamic spectrum access (DSA) and MIMO communications are among the most promising solutions to address the ever increasing wireless traffic demand. An integration that successfully embraces the two is far from trivial due to the dynamics of spectrum opportunities as well as the requirement to jointly optimize both spectrum allocation and spatial/antenna pattern in a distributed fashion. Regardless of spectrum dynamics and heterogeneity, existing literature on channel/power allocation in MIMO DSA systems is only applicable to centralized cases. Our objective here is to design distributed algorithms that jointly allocate opportunistic channels to various links and to simultaneously optimize the MIMO precoding matrices so as to achieve fairness or maximize network throughput. For self-interested DSA links, our distributed algorithm allows links to negotiate channel allocation based on Nash bargaining (NB) and configure the precoding matrices so that links' rate demands are guaranteed while the surplus resources (after meeting minimum rate demands) are fairly allocated. Next, we consider a network throughput maximization formulation (NET-MAX). Both the NB-based and NET-MAX problems are combinatorial with mixed variables. To tackle them, we first transform the original problems by incorporating the concept of timesharing. Using dual decomposition, we develop optimal distributed algorithms for timesharing case, which shed light on how to derive a distributed algorithm for the original problems. Our work fills a gap in the literature of channel allocation where a central controller is not available.
Nguyen, HT, Chen, S-S, Nguyen, NC, Ngo, HH, Guo, W & Li, C-W 2015, 'Exploring an innovative surfactant and phosphate-based draw solution for forward osmosis desalination', Journal of Membrane Science, vol. 489, pp. 212-219.
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Nguyen, HT, Nguyen, NC, Chen, S-S, Ngo, HH, Guo, W & Li, C-W 2015, 'A new class of draw solutions for minimizing reverse salt flux to improve forward osmosis desalination', Science of The Total Environment, vol. 538, pp. 129-136.
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Nguyen, HTT, von Schoultz, B, Nguyen, TV, Thang, TX, Chau, TT, Duc, PTM & Hirschberg, AL 2015, 'Sex hormone levels as determinants of bone mineral density and osteoporosis in Vietnamese women and men', Journal of Bone and Mineral Metabolism, vol. 33, no. 6, pp. 658-665.
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This study sought to investigate the prevalence of osteoporosis and the role of sex hormone levels in the determination of bone mineral density (BMD) and osteoporosis in a Vietnamese population of women and men. The cross-sectional study involved 269 women and 222 men aged 13-83 years, who were randomly selected from urban and rural areas in northern Vietnam. Serum concentrations of estradiol and testosterone were analyzed, and BMD was measured by dual X-ray absorptiometry. We found that the prevalence of osteoporosis in postmenopausal women was 18, 17, and 37 % for the femoral neck, total hip, and lumbar spine, respectively. For men aged 50 years or older, the corresponding values were 8, 7, and 12 %. In men, the most important predictors of BMD for the femoral neck and total hip were age, body mass index, and serum levels of estradiol. For the BMD of the lumbar spine, testosterone also had a significant influence. Determinants of osteoporosis in men for the total hip and lumbar spine were age, weight, and serum concentrations of estradiol and testosterone. In postmenopausal women, age, weight, and residence (urban vs rural) were the most important predictors of BMD and osteoporosis. For all women (including those of reproductive age), serum levels of estradiol were also significant. These data suggest that the prevalence of osteoporosis in the Vietnamese population is high also in men, and that estradiol levels are essential for bone mass in both men and women. The results should have clinical implications and increase awareness of an important health issue within Vietnamese society.
Nguyen, LN, Hai, FI, Price, WE, Kang, J, Leusch, FDL, Roddick, F, van de Merwe, JP, Magram, SF & Nghiem, LD 2015, 'Degradation of a broad spectrum of trace organic contaminants by an enzymatic membrane reactor: Complementary role of membrane retention and enzymatic degradation', International Biodeterioration & Biodegradation, vol. 99, pp. 115-122.
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Nguyen, NC, Chen, S-S, Nguyen, HT, Ngo, HH, Guo, W, Hao, CW & Lin, P-H 2015, 'Applicability of a novel osmotic membrane bioreactor using a specific draw solution in wastewater treatment', Science of The Total Environment, vol. 518-519, pp. 586-594.
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Nguyen, TC, Loganathan, P, Nguyen, TV, Pham, TTN, Kandasamy, J, Wu, M, Naidu, R & Vigneswaran, S 2015, 'Trace elements in road-deposited and waterbed sediments in Kogarah Bay, Sydney: enrichment, sources and fractionation', SOIL RESEARCH, vol. 53, no. 4, pp. 401-411.
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Road-deposited sediments (RDS) are a potential source of trace elements (TE) that can be transported by stormwater to neighbouring water bodies and cause aquatic pollution. A study in Sydney, Australia showed that of the 11 TE analysed, Zn, Cu, V, Cr, and Sb were greatly enriched in RDS compared to those in baseline soils (BS). All TE concentrations in water bed-sediments (WBS) in the catchment area were similar to those in the BS. Correlation and principal component analyses revealed that of the five TE enriched in RDS, Zn, Cu, Cr and Sb were related to each other, and they probably originated from vehicle components such as tyres and brake linings. Vanadium was separated into another component, likely to have originated mainly from road surface asphalt abrasion. Trace element concentrations in the mobile fraction of RDS, determined using a sequential extraction method, were: Fe >Mn, Zn > Cu, Pb> Cr, Ni, V, Cd, Sb. However, this fraction as a percentage of total elemental concentration was highest for Cd and Zn and lowest for Fe, Cr, Ni, and V. The RDS sites had low-medium ecological risk whereas WBS and BS sites had low risk.
Nguyen, TC, Loganathan, P, Nguyen, TV, Vigneswaran, S, Kandasamy, J & Naidu, R 2015, 'Simultaneous adsorption of Cd, Cr, Cu, Pb, and Zn by an iron-coated Australian zeolite in batch and fixed-bed column studies', CHEMICAL ENGINEERING JOURNAL, vol. 270, pp. 393-404.
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Nguyen, TV & Seeman, E 2015, 'Osteoporosis: Treat or Let Die Twice More Likely', Journal of Bone and Mineral Research, vol. 30, no. 9, pp. 1551-1552.
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Nguyen, VV, Dackermann, U, Li, J, Alamdari, MM, Mustapha, S, Runcie, P & Ye, L 2015, 'Damage identification of a concrete arch beam based on frequency response functions and artificial neural networks', Electronic Journal of Structural Engineering, vol. 14, no. 1, pp. 75-84.
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This paper presents a vibration-based structural health monitoring (SHM) technique for the identification of damage in a concrete arch beam replica section of the Sydney Harbour Bridge. The proposed technique uses residual frequency response functions (FRFs) combined with principal component analysis (PCA) to form a damage specific feature (DSF) that is used as an input parameter to artificial neural networks (ANNs). Extensive laboratory testing and numerical modelling are undertaken to validate the method. In the proposed technique, FRFs are obtained by the standard modal testing and damage is identified using ANNs that innovatively map the DSF to the severity of damage (length of damage cut). The results of the experimental and numerical validation show that the proposed technique can successfully quantify damage induced to a concrete arch beam simulating a real life structural component of the Sydney Harbour Bridge.
Ni, B-J & Yuan, Z 2015, 'Recent advances in mathematical modeling of nitrous oxides emissions from wastewater treatment processes', Water Research, vol. 87, pp. 336-346.
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Ni, B-J, Batstone, D, Zhao, B-H & Yu, H-Q 2015, 'Microbial Internal Storage Alters the Carbon Transformation in Dynamic Anaerobic Fermentation', Environmental Science & Technology, vol. 49, no. 15, pp. 9159-9167.
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Ni, B-J, Pan, Y, van den Akker, B, Ye, L & Yuan, Z 2015, 'Full-Scale Modeling Explaining Large Spatial Variations of Nitrous Oxide Fluxes in a Step-Feed Plug-Flow Wastewater Treatment Reactor', Environmental Science & Technology, vol. 49, no. 15, pp. 9176-9184.
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Ni, B-J, Yu, H-Q & Zeng, RJ 2015, 'Understanding the Microbial Internal Storage Turnover in Wastewater Treatment: Retrospect, Prospect, and Challenge', Critical Reviews in Environmental Science and Technology, vol. 45, no. 6, pp. 591-612.
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Ni, J, Indraratna, B, Geng, X-Y, Carter, JP & Chen, Y-L 2015, 'Model of Soft Soils under Cyclic Loading', International Journal of Geomechanics, vol. 15, no. 4, pp. 04014067-04014067.
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Ni, S-Q, Sun, N, Yang, H, Zhang, J & Ngo, HH 2015, 'Distribution of extracellular polymeric substances in anammox granules and their important roles during anammox granulation', Biochemical Engineering Journal, vol. 101, pp. 126-133.
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Ni, W, Cheng, J, Li, X, Gu, G, Huang, L, Guan, Q, Yuan, D & Wang, B 2015, 'Polymeric cathode materials of electroactive conducting poly(triphenylamine) with optimized structures for potential organic pseudo-capacitors with higher cut-off voltage and energy density', RSC Advances, vol. 5, no. 12, pp. 9221-9227.
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Electroactive conducting polymers (ECPs) with designed structures via fast surface reactions are able to store/harvest more electrical energy and may serve as potential cathode materials for organic pseudo-capacitors with higher voltages.
Ni, W, Collings, IB, Lipman, J, Wang, X, Tao, M & Abolhasan, M 2015, 'GRAPH THEORY AND ITS APPLICATIONS TO FUTURE NETWORK PLANNING: SOFTWARE-DEFINED ONLINE SMALL CELL MANAGEMENT', IEEE WIRELESS COMMUNICATIONS, vol. 22, no. 1, pp. 52-60.
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Network planning is facing new and critical challenges due to ad hoc deployment, unbalanced and drastically varying traffic demands, as well as limited backhaul and hardware resources in emerging small cell architectures. We discuss the application of graph theory to address the challenges. A clique-based software-defined online network management approach is proposed that captures traffic imbalance and fluctuation of small cells and optimally plans frequencies, infrastructures, and network structure at any instant. Its applications to three important small cell scenarios of cloud radio, point-to-point microwave backhaul, and interoperator spectrum sharing are demonstrated. Comparison studies show that in each of the scenarios, this new approach is able to significantly outperform conventional static offline network planning schemes in terms of throughput and satisfaction levels of small cells with regard to allocated bandwidths. Specifically, the throughput can be improved by 155 percent for the cloud radio scenario and 110.95 percent for the microwave backhaul scenario. The satisfaction level can be improved by 40 percent for interoperator spectrum sharing.
Ni, W, Collings, IB, Wang, X, Liu, RP, Kajan, A, Hedley, M & Abolhasan, M 2015, 'Radio Alignment for Inductive Charging of Electric Vehicles', IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS, vol. 11, no. 2, pp. 427-440.
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To maximize power transfer for inductively charging electric vehicles (EVs), charger and battery coils must be aligned. Wireless sensors can be installed to estimate misalignments; however, existing ranging techniques cannot satisfy the precision requirements of the misalignment estimation. We propose a high-precision wireless ranging and misalignment estimation scheme, where high precision is achieved by iteratively measuring, estimating, and aligning the coils. Another key aspect is to convert the nonconvex misalignment estimation to a more tractable problem with a convex objective. We develop a conditional gradient descent method to solve the problem, which performs gradient descent (or conditional gradient descent on the boundary of the search space) and projects out-of-boundary points back into the space. Employing experimentally validated models, we show that our scheme can achieve 92% of the efficiency of perfectly aligned coils in 90% of operations, and tolerate correlated distance measurement errors. In contrast, the prior art is susceptible to correlation, undergoing a significant efficiency degradation of 18.5%.
Nie, M, Yan, C, Dong, W, Liu, M, Zhou, J & Yang, Y 2015, 'Occurrence, distribution and risk assessment of estrogens in surface water, suspended particulate matter, and sediments of the Yangtze Estuary', Chemosphere, vol. 127, pp. 109-116.
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Nimmy, SF & Kamal, MS 2015, 'Next generation sequencing under de novo genome assembly', International Journal of Biomathematics, vol. 08, no. 05, pp. 1530001-1530001.
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The next generation sequencing (NGS) is an important process which assures inexpensive organization of vast size of raw sequence dataset over any traditional sequencing systems or methods. Various aspects of NGS such as template preparation, sequencing imaging and genome alignment and assembly outline the genome sequencing and alignment. Consequently, de Bruijn graph (dBG) is an important mathematical tool that graphically analyzes how the orientations are constructed in groups of nucleotides. Basically, dBG describes the formation of the genome segments in circular iterative fashions. Some pivotal dBG-based de novo algorithms and software packages such as T-IDBA, Oases, IDBA-tran, Euler, Velvet, ABySS, AllPaths, SOAPde novo and SOAPde novo2 are illustrated in this paper. Consequently, overlap layout consensus (OLC) graph-based algorithms also play vital role in NGS assembly. Some important OLC-based algorithms such as MIRA3, CABOG, Newbler, Edena, Mosaik and SHORTY are portrayed in this paper. It has been experimented that greedy graph-based algorithms and software packages are also vital for proper genome dataset assembly. A few algorithms named SSAKE, SHARCGS and VCAKE help to perform proper genome sequencing.
Nisola, GM, Beltran, AB, Park, MJ, Torrejos, RE, Seo, JG, Lee, S-P & Chung, W-J 2015, 'Composite membranes with surface-modifying macromolecules for halogenated hydrocarbons removal from water in membrane extraction process', Desalination and Water Treatment, vol. 54, no. 13, pp. 3551-3559.
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© 2014 Balaban Desalination Publications. All rights reserved. Abstract: Flat sheet composite polysulfone (PSf) membranes blended with surface-modifying macromolecules (SMM) were prepared, characterized, and tested for halogenated hydrocarbons (HHC) (i.e. trichloroethylene, TCE) permeation and separation from water in an extractive membrane system. The fluorine end groups in SMMs facilitated its migration towards the membrane surface during membrane casting, whereas the polydimethylsiloxane component rendered the SMM organophilic which improved the surface affinity of the composite membrane towards TCE. Polydimethylsiloxane content in SMM, SMM content in PSf, and air-exposure of the casted blend solutions before membrane formation were found critical in obtaining an effective composite membrane. The presence of a selective SMM layer on the membrane surface was confirmed via contact angle measurement, Fourier-transform infrared spectrometry analysis, and field emission-scanning electron microscope. The most effective composite membrane (PSf with 15 wt% H-SMM and air exposed for 5 min before phase inversion) exhibited TCE flux values ranging between 640 and 1790 mg/m2h when fed with TCE concentrations between 30 and 105 mg/L. Overall results demonstrate the potential use of the composite extractive membrane for the removal of hydrophobic organic contaminants like HHCs from aqueous streams.
Nisola, GM, Limjuco, LA, Vivas, EL, Lawagon, CP, Park, MJ, Shon, HK, Mittal, N, Nah, IW, Kim, H & Chung, W-J 2015, 'Macroporous flexible polyvinyl alcohol lithium adsorbent foam composite prepared via surfactant blending and cryo-desiccation', Chemical Engineering Journal, vol. 280, pp. 536-548.
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© 2015 Elsevier B.V. Macroporous polyvinyl alcohol (PVA) foam composites with high loading of uniformly distributed lithium ion sieves (LIS) were successfully fabricated and evaluated for Li+ recovery. Surfactant blending combined with cryo-desiccation effectively produced LIS/PVA foams with hierarchical porosity composed of macro- and mesopores. Glutaraldehyde cross-linking rendered the LIS/PVA foams insoluble in water but exhibited high water absorbency and flexibility. Relative to the LIS powder, the foams exhibited minimal reductions in adsorption capacity (qe) and kinetic properties due to: (1) high total porosity and surface area, (2) hydrophilicity of PVA matrix, and (3) high LIS loading, which promoted particle exposure on the foam surface. These features facilitated easy convective flow of water through the matrix and allowed intimate contact between the Li+ feed source and the LIS surface. Thus, LIS/PVA foams with high loadings (200-300wt%) exhibited meager reductions in qe (7-13%) and kinetic properties compared to the LIS powder. With LIS loading increase, Li+ selectivity of LIS/PVA foams against other cations (i.e. Na+, K+, Mg2+, Ca2+) likewise approached that of the LIS powder. While 300wt% LIS/PVA had low mechanical property, lower LIS loadings of 200- and 250wt% were highly durable and exhibited no deterioration in adsorption performance and reusability. Among the prepared LIS/PVA, 250wt% demonstrated the highest adsorption performance and can be repeatedly used for long-term application. The developed LIS/PVA foams are promising Li+ adsorbents for secondary Li+ sources; application of these foams via a simple "absorb and squeeze" mechanism could be more practical than the energy-intensive processes like packed bed and membrane systems.
Niyato, D, Hoang, DT, Luong, NC, Wang, P, Kim, DI & Han, Z 2015, 'Smart Data Pricing Models for Internet-of-Things (IoT): A Bundling Strategy Approach', IEEE NETWORK, vol. 30, no. 2, pp. 18-25.
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Internet of things (IoT) has emerged as a new paradigm for the future
Internet. In IoT, enormous devices are connected to the Internet and thereby
being a huge data source for numerous applications. In this article, we focus
on addressing data management in IoT through using a smart data pricing (SDP)
approach. With SDP, data can be managed flexibly and efficiently through
intelligent and adaptive incentive mechanisms. Moreover, it is a major source
of revenue for providers and partners. We propose a new pricing scheme for IoT
service providers to determine the sensing data buying price and IoT service
subscription fee offered to sensor owners and service users, respectively.
Additionally, we adopt the bundling strategy that allows multiple providers to
form a coalition and bid their services as a bundle, attracting more users and
achieving higher revenue. Finally, we outline some important open research
issues for SDP and IoT.
Nobbs, M & Blamires, SJ 2015, 'Spatiotemporal distribution and abundance of mangrove ecosystem engineers: burrowing crabs around canopy gaps', Ecosphere, vol. 6, no. 5, pp. art84-art84.
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Noguera, M, Alvarez, C, Merigó, JM & Urbano, D 2015, 'Determinants of female entrepreneurship in Spain: an institutional approach', Computational and Mathematical Organization Theory, vol. 21, no. 4, pp. 341-355.
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Noushini, A, Samali, B & Vessalas, K 2015, 'Ductility and Damping Characteristics of PVA-FRC Beam Elements', ADVANCES IN STRUCTURAL ENGINEERING, vol. 18, no. 11, pp. 1763-1787.
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Nur, T, Shim, WG, Loganathan, P, Vigneswaran, S & Kandasamy, J 2015, 'Nitrate removal using Purolite A520E ion exchange resin: batch and fixed-bed column adsorption modelling', INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY, vol. 12, no. 4, pp. 1311-1320.
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Removing excessive nitrate from water is essential because it causes eutrophication which in turn has a harmful effect on aquatic life, resulting in a reduction in biodiversity and posing a danger to peoples health when the water is used for drinking. In this study, nitrate removal from aqueous solutions was studied using an ion exchange resin (Purolite A520E) in batch and fixed-bed column experiments. Batch adsorption kinetics was very well described by pseudo-first-order, pseudo-second-order and homogeneous surface diffusion models for resin doses 1.5 and 3.0 g/L at a nitrate concentration 20 mg N/L. Column kinetic data satisfactorily fitted to the empirical Thomas model and a numerical model based on advection dispersion equation for filtration velocities 2.5 and 5.0 m/h at a column height of 12 cm and inlet concentration 20 mg N/L. The experimental and Thomas model predicted breakthrough adsorption capacity ranges for the two filtration rates were 12.013.5 and 8.29.7 mg N/g, respectively, whereas the maximum adsorption capacity determined using Langmuir adsorption isotherm model in the batch study was 32.2 mg N/g.
Nurhadi, M, Efendi, J, Lee, SL, Mahlia, TMI, Chandren, S, Ho, CS & Nur, H 2015, 'Utilization of low rank coal as oxidation catalyst by controllable removal of its carbonaceous component', Journal of the Taiwan Institute of Chemical Engineers, vol. 46, pp. 183-190.
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Nuwanpriya, A, Ho, S-W, Zhang, J, Grant, A & Luo, L 2015, 'PAM-SCFDE for Optical Wireless Communications', Journal of Lightwave Technology, vol. 33, pp. 1-1.
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Multipath dispersion is a serious challenge in visible light communication (VLC) systems as these systems are used for indoor applications where there can be many reflections of the transmitted signal from the ceiling, walls, equipment, etc. These reflected signals cause intersymbol interference in the receiver and can degrade the performance of the system considerably. Orthogonal frequency-division multiplexing (OFDM) for optical wireless communications was introduced to mitigate multipath dispersion and has been well investigated in the literature. Recently, single-carrier systems with frequency-domain equalization (SCFDE) have been proposed as alternatives to OFDM. In this paper, we present pulse amplitude modulated SCFDE (PAM-SCFDE) to mitigate multipath dispersion in VLC systems. We also compare the proposed PAM-SCFDE with existing OFDM and SCFDE techniques for optical wireless communications in terms of analytical and simulated bit-error-rate (BER) performance, power-spectral efficiency, peak-to-average power ratio (PAPR), and overall system complexity. The proposed PAM-SCFDE requires lower per bit signal-to-noise ratio to achieve a BER of 10-4 or smaller for modulation sizes common in practice, both with and without considering the effects of light-emitting diode transmitters, such as nonlinearity, forward current restriction, and bandwidth limitation. Furthermore, it exhibits better power efficiency for data rates less than 3 bit/s/Hz, lower PAPR and system complexity compared to other systems.
Oberst, S & Lai, JCS 2015, 'A statistical approach to estimate the Lyapunov spectrum in disc brake squeal', Journal of Sound and Vibration, vol. 334, pp. 120-135.
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Oberst, S & Lai, JCS 2015, 'Nonlinear transient and chaotic interactions in disc brake squeal', Journal of Sound and Vibration, vol. 342, pp. 272-289.
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Oberst, S & Lai, JCS 2015, 'Pad-mode-induced instantaneous mode instability for simple models of brake systems', Mechanical Systems and Signal Processing, vol. 62-63, pp. 490-505.
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Oberst, S & Lai, JCS 2015, 'Squeal noise in simple numerical brake models', JOURNAL OF SOUND AND VIBRATION, vol. 352, pp. 129-141.
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Oberst, S, Nava-Baro, E, Lai, JCS & Evans, TA 2015, 'An Innovative Signal Processing Method to Extract Ants’ Walking Signals', Acoustics Australia, vol. 43, no. 1, pp. 87-96.
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Oduro, SD, Metia, S, Duc, H, Hong, G & Ha, QP 2015, 'Multivariate adaptive regression splines models for vehicular emission prediction', Visualization in Engineering, vol. 3, no. 1, pp. 1-12.
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Abstract
Background
Rate models for predicting vehicular emissions of nitrogen oxides (NO
X
) are insensitive to the vehicle modes of operation, such as cruise, acceleration, deceleration and idle, because these models are usually based on the average trip speed. This study demonstrates the feasibility of using other variables such as vehicle speed, acceleration, load, power and ambient temperature to predict (NO
X
) emissions to ensure that the emission inventory is accurate and hence the air quality modelling and management plans are designed and implemented appropriately.
Methods
We propose to use the non-parametric Boosting-Multivariate Adaptive Regression Splines (B-MARS) algorithm to improve the accuracy of the Multivariate Adaptive Regression Splines (MARS) modelling to effectively predict NO
X
emissions of vehicles in accordance with on-board measurements and the chassis dynamometer testing. The B-MARS methodology is then applied to the NO
X
emission estimation.
Results
The model approach provides more reliable results of the estimation and offers better predictions of NO
X
emissions.
Conclusion
The resu...
Oreshkov, O & Giarmatzi, C 2015, 'Causal and causally separable processes', New J. Phys., vol. 18, p. 093020.
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We develop rigorous notions of causality and causal separability in the
process framework introduced in [Oreshkov, Costa, Brukner, Nat. Commun. 3, 1092
(2012)], which describes correlations between separate local experiments
without a prior assumption of causal order between them. We consider the
general multipartite case and take into account the possibility for dynamical
causal order, where the order of a set of events can depend on other events in
the past. Starting from a general definition of causality, we derive an
iteratively formulated canonical decomposition of multipartite causal
processes, and show that for a fixed number of settings and outcomes for each
party, the respective correlations form a polytope whose facets define causal
inequalities. In the case of quantum processes, we investigate the link between
causality and the theory-dependent notion of causal separability, which we here
extend to the multipartite case based on concrete principles. We show that
causality and causal separability are not equivalent in general by giving an
example of a physically admissible tripartite quantum process that is causal
but not causally separable. We also show that there exist causally separable
(and hence causal) quantum processes that become non-causal if extended by
supplying the parties with entangled ancillas. This example of activation of
non-causality motivates the concepts of extensibly causal and extensibly
causally separable (ECS) processes, for which the respective property remains
invariant under extension with arbitrary ancillas. We characterize the class of
tripartite ECS processes in terms of simple conditions on the form of the
process matrix, which generalize the form of bipartite causally separable
process matrices. We show that the processes realizable by classically
controlled quantum circuits are ECS and conjecture that the reverse also holds.
Ozmen, MM, Fu, Q, Kim, J & Qiao, GG 2015, 'A rapid and facile preparation of novel macroporous silicone-based cryogels via photo-induced thiol–ene click chemistry', Chemical Communications, vol. 51, no. 98, pp. 17479-17482.
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We prepared novel cryogelsviafacile thiol–ene reaction at low temperatures, which can selectively remove oils with excellent recyclability.
Palacios-Marqués, D, Merigó, JM & Soto-Acosta, P 2015, 'Online social networks as an enabler of innovation in organizations', Management Decision, vol. 53, no. 9, pp. 1906-1920.
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Purpose
– The purpose of this paper is to study the effect of online social networks on firm performance and how this technology can help to create value. The authors approach the problem from the Resource-Based View in order to analyze if online social networks can be considered source of competitive advantage and how it can enhance or complement essential marketing competences.
Design/methodology/approach
– The data were obtained from a survey based on the Spanish hospitality firms. This sector was chosen because Web 2.0 is becoming an important marketing channel in the tourism industry, and especially in hospitality firms. In addition, Spain is the one of the largest tourist destination in the world and has a strong presence of social media and Web 2.0 use by the population and hospitality enterprises. Between February and June 2012, the questionnaire was sent to all top managers of four-star and five-star Spanish hospitality firms. The authors received 197 questionnaires, but four of them were eliminated due to errors or because they were received too late.
Findings
– Results show that there is a statistically significant positive relationship between online social networks and innovation capacity and that the relationship between online social networks and firm performance is fully mediated by innovation capacity. In turn, the authors find a statistically significant positive relationship between innovation capacity and performance in the hotel industry.
Telematics and Informatics, vol. 32, no. 1, pp. 23-32.
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Palash, SM, Masjuki, HH, Kalam, MA, Atabani, AE, Rizwanul Fattah, IM & Sanjid, A 2015, 'Biodiesel production, characterization, diesel engine performance, and emission characteristics of methyl esters from Aphanamixis polystachya oil of Bangladesh', Energy Conversion and Management, vol. 91, pp. 149-157.
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Paler, A, Polian, I, Nemoto, K & Devitt, SJ 2015, 'Fault-Tolerant High Level Quantum Circuits: Form, Compilation and Description', Quantum Science and Technology, vol. 2, no. 2, p. 025003.
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Fault-tolerant quantum error correction is a necessity for any quantum
architecture destined to tackle interesting, large-scale problems. Its
theoretical formalism has been well founded for nearly two decades. However, we
still do not have an appropriate compiler to produce a fault-tolerant, error
corrected description from a higher level quantum circuit for state of the art
hardware models. There are many technical hurdles, including dynamic circuit
constructions that occur when constructing fault-tolerant circuits with
commonly used error correcting codes. We introduce a package that converts high
level quantum circuits consisting of commonly used gates into a form employing
all decompositions and ancillary protocols needed for fault-tolerant error
correction. We call this form the (I)initialisation, (C)NOT, (M)measurement
form (ICM) and consists of an initialisation layer of qubits into one of four
distinct states, a massive, deterministic array of CNOT operations and a series
of time ordered $X$- or $Z$-basis measurements. The form allows a more flexbile
approach towards circuit optimisation. At the same time, the package outputs a
standard circuit or a canonical geometric description which is a necessity for
operating current state-of-the-art hardware architectures using topological
quantum codes.
Pan, S, Wu, J, Zhu, X, Long, G & Zhang, C 2015, 'Finding the best not the most: regularized loss minimization subgraph selection for graph classification', PATTERN RECOGNITION, vol. 48, no. 11, pp. 3783-3796.
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Pan, Y, Ni, B-J, Lu, H, Chandran, K, Richardson, D & Yuan, Z 2015, 'Evaluating two concepts for the modelling of intermediates accumulation during biological denitrification in wastewater treatment', Water Research, vol. 71, pp. 21-31.
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Panetta, J, Zhou, Q, Malomo, L, Pietroni, N, Cignoni, P & Zorin, D 2015, 'Elastic textures for additive fabrication.', ACM Trans. Graph., vol. 34, pp. 135:1-135:1.
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Park, C-H, Tijing, LD, Pant, HR & Kim, CS 2015, 'Effect of laser polishing on the surface roughness and corrosion resistance of Nitinol stents', Bio-Medical Materials and Engineering, vol. 25, no. 1, pp. 67-75.
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Park, JH, Szemes, M, Vieira, GC, Melegh, Z, Malik, S, Heesom, KJ, Von Wallwitz-Freitas, L, Greenhough, A, Brown, KW, Zheng, YG, Catchpoole, D, Deery, MJ & Malik, K 2015, 'Protein arginine methyltransferase 5 is a key regulator of the MYCN oncoprotein in neuroblastoma cells', Molecular Oncology, vol. 9, no. 3, pp. 617-627.
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Approximately half of poor prognosis neuroblastomas (NBs) are characterized by pathognomonic MYCN gene amplification and MYCN over-expression. Here we present data showing that short-interfering RNA mediated depletion of the protein arginine methyltransferase 5 (PRMT5) in cell-lines representative of NBs with MYCN gene amplification leads to greatly impaired growth and apoptosis. Growth suppression is not apparent in the MYCN-negative SH-SY5Y NB cell-line, or in two immortalized human fibroblast cell-lines. Immunoblotting of NB cell-lines shows that high PRMT5 expression is strongly associated with MYCN-amplification (P < 0.004, Mann-Whitney U-test) and immunohistochemical analysis of primary NBs reveals that whilst PRMT5 protein is ubiquitously expressed in the cytoplasm of most cells, MYCN-amplified tumours exhibit pronounced nuclear PRMT5 staining. PRMT5 knockdown in MYCN-overexpressing cells, including the SHEP-21N cell-line with inducible MYCN expression leads to a dramatic decrease in MYCN protein and MYCN-associated cell-death in SHEP-21N cells. Quantitative gene expression analysis and cycloheximide chase experiments suggest that PRMT5 regulates MYCN at a post-transcriptional level. Reciprocal co-immunoprecipitation experiments demonstrated that endogenous PRMT5 and MYCN interact in both SK-N-BE(2)C and NGP cell lines. By using liquid chromatography - tandem mass spectrometry (LC-MS/MS) analysis of immunoprecipitated MYCN protein, we identified several potential sites of arginine dimethylation on the MYCN protein. Together our studies implicate PRMT5 in a novel mode of MYCN post-translational regulation and suggest PRMT5 plays a major role in NB tumorigenesis. Small-molecule inhibitors of PRMT5 may therefore represent a novel therapeutic strategy for neuroblastoma and other cancers driven by the MYCN oncogene.
Park, MJ, Phuntsho, S, He, T, Nisola, GM, Tijing, LD, Li, X-M, Chen, G, Chung, W-J & Shon, HK 2015, 'Graphene oxide incorporated polysulfone substrate for the fabrication of flat-sheet thin-film composite forward osmosis membranes', Journal of Membrane Science, vol. 493, pp. 496-507.
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The preparation and performances of the newly synthesized thin film composite (TFC) forward osmosis (FO) membranes with graphene oxide (GO)-modified support layer are presented in this study. GO nanosheets were incorporated in the polysulfone (PSf) to obtain PSf/GO composite membrane support layer. Polyamide (PA) active layer was subsequently formed on the PSf/GO by interfacial polymerization to obtain the TFC-FO membranes. Results reveal that at an optimal amount of GO addition (0.25 wt%), a PSf/GO composite support layer with favorable structural property measured in terms of thickness, porosity and pore size can be achieved. The optimum incorporation of GO in the PSF support layer not only significantly improved water permeability but also allowed effective PA layer formation, in comparison to that of pure PSf support layer which had much lower water permeability. Thus, a TFC-FO membrane with high water flux (19.77 Lm-2h-1 against 6.08 Lm-2h-1 for pure PSf) and reverse flux selectivity (5.75 Lg-1 against 3.36 Lg-1 for pure PSf) was obtained under the active layer facing the feed solution or AL-FS membrane orientation. Besides the improved structural properties (reduced structural parameter, S) of the support layer, enhanced support hydrophilicity also contributed to the improved water permeability of the membrane. Beyond a certain point of GO addition (≥0.5 wt%), the poor dispersion of GO in dope solution and significant structure change resulted in lower water permeation and weaker mechanical properties in support as well as FO flux/selectivity of consequent TFC membrane. Overall, this study suggests that GO modification of membrane supports could be a promising technique to improve the performances of TFC-FO membranes.
Park, SH, Park, B, Shon, HK & Kim, S 2015, 'Modeling full-scale osmotic membrane bioreactor systems with high sludge retention and low salt concentration factor for wastewater reclamation', Bioresource Technology, vol. 190, pp. 508-515.
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Pathirage, U & Indraratna, B 2015, 'Assessment of optimum width and longevity of a permeable reactive barrier installed in an acid sulfate soil terrain', Canadian Geotechnical Journal, vol. 52, no. 7, pp. 999-1004.
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Removal of contaminants from groundwater using permeable reactive barriers (PRBs) is a cost-effective and popular engineering solution used throughout the world. Dissolved pollutants in groundwater are removed through geochemical processes that make PRBs effective for different types of contaminants. In achieving this, it is vital to determine the optimum width of the PRB to allow adequate residence time within the barrier and to establish its longevity. For this purpose, both field monitoring and geochemical modelling were conducted for a trial PRB located in the Shoalhaven Floodplain, south of Wollongong in Australia. In this study, the optimum PRB width is evaluated numerically, based on the neutralization effectiveness, i.e., when acidic groundwater travels through the alkaline PRB. A model developed previously has been extended considering the residence time, reaction kinetics, mineral precipitation–induced reduction in porosity and hydraulic conductivity, influent concentrations of the contaminants, and groundwater flow velocity. Longevity of the PRB is determined with respect to groundwater flow rates and amount of reactive material consumed.
Pathirana, SW, Uy, B, Mirza, O & Zhu, X 2015, 'Strengthening of existing composite steel-concrete beams utilising bolted shear connectors and welded studs', Journal of Constructional Steel Research, vol. 114, pp. 417-430.
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Pedrycz, W & Lu, J 2015, 'Web-Based Intelligent Support Systems-Preface to the Special Section', IEEE TRANSACTIONS ON FUZZY SYSTEMS, vol. 23, no. 1, pp. 1-2.
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Pendrill, A-M & Eager, D 2015, 'Free fall and harmonic oscillations: analyzing trampoline jumps', Physics Education, vol. 50, no. 1, pp. 64-70.
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Trampolines can be found in many gardens and also in some playgrounds. They offer an easily accessible vertical motion that includes free fall. In this work, the motion on a trampoline is modelled by assuming a linear relation between force and deflection, giving harmonic oscillations for small amplitudes. An expression for the cycle-time is obtained in terms of maximum normalized force from the trampoline and the harmonic frequency. A simple expression is obtained for the ratio between air-time and harmonic period, and the maximum g-factor. The results are compared to experimental results, including accelerometer data showing 7g during bounces on a small trampoline in an amusement park play area. Similar results are obtained on a larger garden trampoline, and even larger accelerations have been measured for
gymnastic trampolines.
Peng, L, Chen, X, Xu, Y, Liu, Y, Gao, S-H & Ni, B-J 2015, 'Biodegradation of pharmaceuticals in membrane aerated biofilm reactor for autotrophic nitrogen removal: A model-based evaluation', Journal of Membrane Science, vol. 494, pp. 39-47.
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Peng, L, Liu, Y, Gao, S-H, Chen, X, Xin, P, Dai, X & Ni, B-J 2015, 'Evaluation on the Nanoscale Zero Valent Iron Based Microbial Denitrification for Nitrate Removal from Groundwater', Scientific Reports, vol. 5, no. 1.
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AbstractNanoscale zero valent iron (NZVI) based microbial denitrification has been demonstrated to be a promising technology for nitrate removal from groundwater. In this work, a mathematical model is developed to evaluate the performance of this new technology and to provide insights into the chemical and microbial interactions in the system in terms of nitrate reduction, ammonium accumulation and hydrogen turnover. The developed model integrates NZVI-based abiotic reduction of nitrate, NZVI corrosion for hydrogen production and hydrogen-based microbial denitrification and satisfactorily describes all of the nitrate and ammonium dynamics from two systems with highly different conditions. The high NZVI corrosion rate revealed by the model indicates the high reaction rate of NZVI with water due to their large specific surface area and high surface reactivity, leading to an effective microbial nitrate reduction by utilizing the produced hydrogen. The simulation results further suggest a NZVI dosing strategy (3–6 mmol/L in temperature range of 30–40 °C, 6–10 mmol/L in temperature range of 15–30 °C and 10–14 mmol/L in temperature range of 5–15 °C) during groundwater remediation to make sure a low ammonium yield and a high nitrogen removal efficiency.
Peng, L, Liu, Y, Gao, S-H, Dai, X & Ni, B-J 2015, 'Assessing chromate reduction by dissimilatory iron reducing bacteria using mathematical modeling', Chemosphere, vol. 139, pp. 334-339.
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Chromate (Cr (VI)) is a ubiquitous contaminant in aquifers and soils, which can be reduced to its trivalent counterpart (Cr (III)), with the hazard being relieved. The coupling microbial and chemical reduction by dissimilatory iron reducing bacteria (IRB) is a promising approach for the reduction of Cr (VI) to Cr (III). In this work, three mathematical models with different Cr (VI) reduction pathways were proposed and compared based on their ability to predict the performance of an IRB-based stirred-flow reactor treating Cr (VI) contaminated medium and to provide insights into the possible chemical or microbial pathways for Cr (VI) reduction in the system. The Cr (VI) reduction was considered as chemical reaction between Fe (II) and Cr (VI), direct microbial reduction by IRB and combined biotic–abiotic reduction in these three models, respectively. Model evaluation results indicated that the model incorporating both chemical and microbial Cr (VI) reductions could well describe the system performance. In contrast, the other two single-pathway models were not capable of predicting the experimental data, suggesting that both chemical and microbial pathways contributed to Cr (VI) reduction by IRB. The validity of the two-pathway model was further confirmed by an independent experimental data set with different conditions. The results further revealed that the organic carbon availability and Cr (VI) loading rates for the IRB in the system determined the relative contributions of chemical and microbial pathways to overall Cr (VI) reduction.
Peng, L, Ni, B-J, Ye, L & Yuan, Z 2015, 'N2O production by ammonia oxidizing bacteria in an enriched nitrifying sludge linearly depends on inorganic carbon concentration', Water Research, vol. 74, pp. 58-66.
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Peng, L, Ni, B-J, Ye, L & Yuan, Z 2015, 'Selection of mathematical models for N2O production by ammonia oxidizing bacteria under varying dissolved oxygen and nitrite concentrations', Chemical Engineering Journal, vol. 281, pp. 661-668.
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Peng, L, Ni, B-J, Ye, L & Yuan, Z 2015, 'The combined effect of dissolved oxygen and nitrite on N2O production by ammonia oxidizing bacteria in an enriched nitrifying sludge', Water Research, vol. 73, pp. 29-36.
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Percival, J, McGregor, C, Percival, N & James, A 2015, 'Enabling the integration of clinical event and physiological data for real-time and retrospective analysis', Information Systems and e-Business Management, vol. 13, no. 4, pp. 693-711.
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Peris-Ortiz, M & Merigó Lindahl, JM 2015, 'Preface', Innovation, Technology and Knowledge Management, pp. ix-xv.
Perry, RT, Kutay, C & Rabhi, F 2015, 'Using complex events to represent domain concepts in graphs', Lecture Notes in Electrical Engineering, vol. 339, pp. 303-311.
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© Springer-Verlag Berlin Heidelberg 2015. We have developed an event based visualisation model for analysing patterns between news story data and stock prices. Visual analytics systems generally show a direct mapping from data to visualisation. We show that by inserting an intermediate step, which models an expert manipulating data, we can provide unique results that display patterns within the data being investigated and assist less expert users.
Peters, G & Paul, G 2015, 'Maintaining an old icon with a new technology', Journal of Protective Coatings and Linings, vol. 32, no. 8, pp. 22-31.
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The latest technological advancements are being used in maintaining the Sydney Harbor bridge. The latest planned maintenance involving abrasive blast-cleaning of the old paint back to bare metal has provided the opportunity for robotic technology to be used to assist maintenance workers engaged in restoration work on the bridge. Rosie and Sandy are two autonomous robots that have been performing some of the more repetitive and straining blast work on the southern side approach spans under the road deck of the bridge.
Pfister, C, Kaniewski, J, Tomamichel, M, Mantri, A, Schmucker, R, McMahon, N, Milburn, G & Wehner, S 2015, 'Understanding nature from experimental observations: a theory independent test for gravitational decoherence', Nature Communications, vol. 7, pp. 13022-13022.
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Quantum mechanics and the theory of gravity are presently not compatible. A
particular question is whether gravity causes decoherence - an unavoidable
source of noise. Several models for gravitational decoherence have been
proposed, not all of which can be described quantum mechanically. In parallel,
several experiments have been proposed to test some of these models, where the
data obtained by such experiments is analyzed assuming quantum mechanics. Since
we may need to modify quantum mechanics to account for gravity, however, one
may question the validity of using quantum mechanics as a calculational tool to
draw conclusions from experiments concerning gravity.
Here we propose an experiment to estimate gravitational decoherence whose
conclusions hold even if quantum mechanics would need to be modified. We first
establish a general information-theoretic notion of decoherence which reduces
to the standard measure within quantum mechanics. Second, drawing on ideas from
quantum information, we propose a very general experiment that allows us to
obtain a quantitative estimate of decoherence of any physical process for any
physical theory satisfying only very mild conditions.Finally, we propose a
concrete experiment using optomechanics to estimate gravitational decoherence
in any such theory, including quantum mechanics as a special case.
Our work raises the interesting question whether other properties of nature
could similarly be established from experimental observations alone - that is,
without already having a rather well formed theory of nature like quantum
mechanics to make sense of experimental data.
Pham, TTN, Mainali, B, Ngo, HH, Guo, W, Listowski, A, O'Halloran, K, Miechel, C & Corby, N 2015, 'Effect of heavy metals in recycled water used for household laundry on quality of cloth and washing machine', DESALINATION AND WATER TREATMENT, vol. 54, no. 1, pp. 178-190.
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Phan, HV, Hai, FI, McDonald, JA, Khan, SJ, van de Merwe, JP, Leusch, FDL, Zhang, R, Price, WE, Broeckmann, A & Nghiem, LD 2015, 'Impact of hazardous events on the removal of nutrients and trace organic contaminants by an anoxic–aerobic membrane bioreactor receiving real wastewater', Bioresource Technology, vol. 192, pp. 192-201.
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Phan, HV, Hai, FI, McDonald, JA, Khan, SJ, Zhang, R, Price, WE, Broeckmann, A & Nghiem, LD 2015, 'Nutrient and trace organic contaminant removal from wastewater of a resort town: Comparison between a pilot and a full scale membrane bioreactor', International Biodeterioration & Biodegradation, vol. 102, pp. 40-48.
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Phien, HN, Bengua, JA, Tuan, HD, Corboz, P & Orus, R 2015, 'Infinite projected entangled pair states algorithm improved: Fast full update and gauge fixing', PHYSICAL REVIEW B, vol. 92, no. 3.
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The infinite projected entangled pair states (iPEPS) algorithm [J. Jordan et al., Phys. Rev. Lett. 101, 250602 (2008)] has become a useful tool in the calculation of ground-state properties of two-dimensional quantum lattice systems in the thermodynamic limit. Despite its many successful implementations, the method has some limitations in its present formulation which hinder its application to some highly entangled systems. The purpose of this paper is to unravel some of these issues, in turn enhancing the stability and efficiency of iPEPS methods. For this, we first introduce the fast full update scheme, where effective environment and iPEPS tensors are both simultaneously updated (or evolved) throughout time. As we shall show, this implies two crucial advantages: (i) dramatic computational savings and (ii) improved overall stability. In addition, we extend the application of the local gauge fixing, successfully implemented for finite-size PEPS [M. Lubasch et al., Phys. Rev. B 90, 064425 (2014)], to the iPEPS algorithm. We see that the gauge fixing not only further improves the stability of the method but also accelerates the convergence of the alternating least-squares sweeping in the (either “full” or “fast full”) tensor update scheme. The improvement in terms of computational cost and stability of the resulting “improved” iPEPS algorithm is benchmarked by studying the ground-state properties of the quantum Heisenberg and transverse-field Ising models on an infinite square lattice.
Pietroni, N, Tonelli, D, Puppo, E, Froli, M, Scopigno, R & Cignoni, P 2015, 'Statics Aware Grid Shells.', Comput. Graph. Forum, vol. 34, pp. 627-641.
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Piyathilaka, L & Kodagoda, S 2015, 'Learning Hidden Human Context in 3D Office Scenes by Mapping Affordances Through Virtual Humans.', Unmanned Syst., vol. 3, no. 04, pp. 299-310.
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Ability to learn human context in an environment could be one of the most desired fundamental abilities that a robot should have when sharing a workspace with human co-workers. Arguably, a robot with appropriate human context awareness could lead to a better human–robot interaction. In this paper, we address the problem of learning human context in an office environment by only using 3D point cloud data. Our approach is based on the concept of affordance-map, which involves mapping latent human actions in a given environment by looking at geometric features of the environment. This enables us to learn the human context in the environment without observing real human behaviors which themselves are a nontrivial task to detect. Once learned, affordance-map allows us to assign an affordance cost value for each grid location of the map. These cost maps are later used to develop an active object search strategy and to develop a context-aware global path planning strategy.
Polwaththe-Gallage, H-N, Saha, SC, Sauret, E, Flower, R & Gu, Y 2015, 'Numerical Investigation of Motion and Deformation of a Single Red Blood Cell in a Stenosed Capillary', International Journal of Computational Methods, vol. 12, no. 04, pp. 1540003-1540003.
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It is generally assumed that influence of the red blood cells (RBCs) is predominant in blood rheology. The healthy RBCs are highly deformable and can thus easily squeeze through the smallest capillaries having internal diameter less than their characteristic size. On the other hand, RBCs infected by malaria or other diseases are stiffer and so less deformable. Thus it is harder for them to flow through the smallest capillaries. Therefore, it is very important to critically and realistically investigate the mechanical behavior of both healthy and infected RBCs which is a current gap in knowledge. The motion and the steady state deformed shape of the RBCs depend on many factors, such as the geometrical parameters of the capillary through which blood flows, the membrane bending stiffness and the mean velocity of the blood flow. In this study, motion and deformation of a single two-dimensional RBC in a stenosed capillary is explored by using smoothed particle hydrodynamics (SPH) method. An elastic spring network is used to model the RBC membrane, while the RBC's inside fluid and outside fluid are treated as SPH particles. The effect of RBC's membrane stiffness (k b ), inlet pressure (P) and geometrical parameters of the capillary on the motion and deformation of the RBC is studied. The deformation index, RBC's mean velocity and the cell membrane energy are analyzed when the cell passes through the stenosed capillary. The simulation results demonstrate that the k b , P and the geometrical parameters of the capillary have a significant impact on the RBCs' motion and deformation in the stenosed section.
Porter, SH, Huang, Z, Cheng, Z, Avdeev, M, Chen, Z, Dou, S & Woodward, PM 2015, 'Structural and magnetic properties of RTiNO2 (R=Ce, Pr, Nd) perovskite nitride oxides', Journal of Solid State Chemistry, vol. 226, pp. 279-285.
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Porter, SH, Huang, Z, Dou, S, Brown-Xu, S, Golam Sarwar, ATM, Myers, RC & Woodward, PM 2015, 'Electronic Structure and Photocatalytic Water Oxidation Activity of RTiNO2 (R = Ce, Pr, and Nd) Perovskite Nitride Oxides', Chemistry of Materials, vol. 27, no. 7, pp. 2414-2420.
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Poulos, RC, Thoms, JAI, Shah, A, Beck, D, Pimanda, JE & Wong, JWH 2015, 'Systematic Screening of Promoter Regions Pinpoints Functional Cis-Regulatory Mutations in a Cutaneous Melanoma Genome', Molecular Cancer Research, vol. 13, no. 8, pp. 1218-1226.
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Abstract
With the recent discovery of recurrent mutations in the TERT promoter in melanoma, identification of other somatic causal promoter mutations is of considerable interest. Yet, the impact of sequence variation on the regulatory potential of gene promoters has not been systematically evaluated. This study assesses the impact of promoter mutations on promoter activity in the whole-genome sequenced malignant melanoma cell line COLO-829. Combining somatic mutation calls from COLO-829 with genome-wide chromatin accessibility and histone modification data revealed mutations within promoter elements. Interestingly, a high number of potential promoter mutations (n = 23) were found, a result mirrored in subsequent analysis of TCGA whole-melanoma genomes. The impact of wild-type and mutant promoter sequences were evaluated by subcloning into luciferase reporter vectors and testing their transcriptional activity in COLO-829 cells. Of the 23 promoter regions tested, four mutations significantly altered reporter activity relative to wild-type sequences. These data were then subjected to multiple computational algorithms that score the cis-regulatory altering potential of mutations. These analyses identified one mutation, located within the promoter region of NDUFB9, which encodes the mitochondrial NADH dehydrogenase (ubiquinone) 1 beta subcomplex 9, to be recurrent in 4.4% (19 of 432) of TCGA whole-melanoma exomes. The mutation is predicted to disrupt a highly conserved SP1/KLF transcription factor binding motif and its frequent co-occurrence with mutations in the coding sequence of NF1 supports a pathologic role for this mutation in melanoma. Taken together, these data show the relatively high prevalence of promoter mutations in the COLO-829 melanoma genome, and indicate that a proportion of these significantly alter the regulatory potential of gene promoters.
Implications: Genomic-based s...
Pradhan, B 2015, 'Geoinformation techniques in natural hazard modeling: Preface', Geoscience Frontiers, vol. 6, no. 6, pp. 791-792.
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Pradhan, M, Vigneswaran, S & Kandasamy, J 2015, 'Assessment of fouling behaviour in submerged microfiltration system coupled with flocculation', Journal of Industrial and Engineering Chemistry, vol. 21, pp. 254-260.
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Pramanik, BK, Roddick, FA, Fan, L, Jeong, S & Vigneswaran, S 2015, 'Assessment of biological activated carbon treatment to control membrane fouling in reverse osmosis of secondary effluent for reuse in irrigation', Desalination, vol. 364, pp. 90-95.
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Prasad, M, Li, DL, Lin, CT, Prakash, S, Singh, J & Joshi, S 2015, 'Designing Mamdani-Type Fuzzy Reasoning for Visualizing Prediction Problems Based on Collaborative Fuzzy Clustering', IAENG International Journal of Computer Science, vol. 42, no. 4, pp. 404-411.
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In this paper a collaborative fuzzy c-means (CFCM) is used to generate fuzzy rules for fuzzy inference systems to evaluate the time series model. CFCM helps system to integrate two or more different datasets having similar features which are collected at the different environment with the different time period and it integrates these datasets together in order to visualize some common patterns among the datasets. In order to do any mode of integration between datasets, there is a necessity to define the common features between datasets by using some kind of collaborative process and also need to preserve the privacy and security at higher levels. This collaboration process gives a common structure between datasets which helps to define an appropriate number of rules for structural learning and also improve the accuracy of the system modeling.
Prasad, M, Lin, YY, Lin, CT, Er, MJ & Prasad, OK 2015, 'A new data-driven neural fuzzy system with collaborative fuzzy clustering mechanism', Neurocomputing, vol. 167, pp. 558-568.
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Pratama, M, Anavatti, SG & Lu, J 2015, 'Recurrent Classifier Based on an Incremental Metacognitive-Based Scaffolding Algorithm', IEEE TRANSACTIONS ON FUZZY SYSTEMS, vol. 23, no. 6, pp. 2048-2066.
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Praveena, SM, Pradhan, B & Ismail, SNS 2015, 'Spatial Assessment of Heavy Metals in Surface Soil from Klang District (Malaysia): An Example from a Tropical Environment', Human and Ecological Risk Assessment: An International Journal, vol. 21, no. 7, pp. 1980-2003.
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Qadir, A, Sharma, M, Parvareh, F, Khalilpour, R & Abbas, A 2015, 'Flexible dynamic operation of solar-integrated power plant with solvent based post-combustion carbon capture (PCC) process', Energy Conversion and Management, vol. 97, pp. 7-19.
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Qi Mao, Tsang, IW, Shenghua Gao & Li Wang 2015, 'Generalized Multiple Kernel Learning With Data-Dependent Priors', IEEE Transactions on Neural Networks and Learning Systems, vol. 26, no. 6, pp. 1134-1148.
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Qiao, M, Bian, W, Xu, RYD & Tao, D 2015, 'Diversified Hidden Markov Models for Sequential Labeling.', IEEE Trans. Knowl. Data Eng., vol. 27, no. 11, pp. 2947-2960.
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Qin, H, Zhou, W & Zhang, S 2015, 'Bayesian inferences of generation and growth of corrosion defects on energy pipelines based on imperfect inspection data', Reliability Engineering & System Safety, vol. 144, pp. 334-342.
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Qin, P-Y, Wei, F & Guo, YJ 2015, 'A Wideband-to-Narrowband Tunable Antenna Using A Reconfigurable Filter', IEEE Transactions on Antennas and Propagation, vol. 63, no. 5, pp. 2282-2285.
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A novel microstrip circular disc monopole antenna with a reconfigurable 10-dB impedance bandwidth is proposed in this communication for cognitive radios (CRs). The antenna is fed by a microstrip line integrated with a bandpass filter based on a three-line coupled resonator (TLCR). The reconfiguration of the filter enables the monopole antenna to operate at either a wideband state or a narrowband state by using a PIN diode. For the narrowband state, two varactor diodes are employed to change the antenna operating frequency from 3.9 to 4.82 GHz continuously, which is different from previous work using PIN diodes to realize a discrete tuning. Similar radiation patterns with low cross-polarization levels are achieved for the two operating states. Measured results on tuning range, radiation patterns, and realized gains are provided, which show good agreement with numerical simulations.
Qin, S, Liu, F, Wang, C, Song, Y & Qu, J 2015, 'Spatial-temporal analysis and projection of extreme particulate matter (PM10 and PM2.5) levels using association rules: A case study of the Jing-Jin-Ji region, China', Atmospheric Environment, vol. 120, pp. 339-350.
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Qin, S, Liu, F, Wang, J & Song, Y 2015, 'Interval forecasts of a novelty hybrid model for wind speeds', Energy Reports, vol. 1, pp. 8-16.
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© 2014 The Authors. Published by Elsevier Ltd. The utilization of wind energy, as a booming technology in the field of renewable energies, has been highly regarded around the world. Quantification of uncertainties associated with accurate wind speed forecasts is essential for regulating wind power generation and integration. However, it remains difficult work primarily due to the stochastic and nonlinear characteristics of wind speed series. Traditional models for wind speed forecasting mostly focus on generating certain predictive values, which cannot properly handle uncertainties. For quantifying potential uncertainties, a hybrid model constructed by the Cuckoo Search Optimization (CSO)-based Back Propagation Neural Network (BPNN) is proposed to establish wind speed interval forecasts (IFs) by estimating the lower and upper bounds. The quality of IFs is assessed quantitatively using IFs coverage probability (IFCP) and IFs normalized average width (IFNAW). Moreover, to assess the overall quality of IFs comprehensively, a tradeoff between informativeness (IFNAW) and validity (IFCP) of IFs is examined by coverage width-based criteria (CWC). As an applicative study, wind speeds from the Xinjiang Region in China are used to validate the proposed hybrid model. The results demonstrate that the proposed model can construct higher quality IFs for short-term wind speed forecasts.
Qiu, N, Gao, Y, Fang, J, Feng, Z, Sun, G & Li, Q 2015, 'Crashworthiness analysis and design of multi-cell hexagonal columns under multiple loading cases', Finite Elements in Analysis and Design, vol. 104, pp. 89-101.
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Qu, J, Wong, D, Du, S, Yang, L, Ringer, S & Zheng, R 2015, 'Methodology exploration of specimen preparation for atom probe tomography from nanowires', Ultramicroscopy, vol. 159, pp. 427-431.
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Raghunandan, ME, Sharma, JS & Pradhan, B 2015, 'A review on the effect of rubber membrane in triaxial tests', Arabian Journal of Geosciences, vol. 8, no. 5, pp. 3195-3206.
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Rahman, H, Shams-Ul-Islam, Zhou, CY, Kiyani, T & Saha, SC 2015, 'On the effect of Reynolds number for flow past three side-by-side square cylinders for unequal gap spacings', KSCE Journal of Civil Engineering, vol. 19, no. 1, pp. 233-247.
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Rahman, MA, Hogan, B, Duncan, E, Doyle, C, Rahman, MM, Nguyen, TV, Lim, RP, Maher, W, Naidu, R, Krassoi, R, Vigneswaran, S & Hassler, C 2015, 'Ecotoxicological Effects of an Arsenic Remediation Method on Three Freshwater Organisms—Lemna disperma, Chlorella sp. CE-35 and Ceriodaphnia cf. dubia', Water, Air, & Soil Pollution, vol. 226, no. 12.
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Rahman, MS, Mahmud, MA, Pota, HR & Hossain, MJ 2015, 'A multi-agent approach for enhancing transient stability of smart grids', International Journal of Electrical Power & Energy Systems, vol. 67, pp. 488-500.
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Rahman, MS, Mahmud, MA, Pota, HR, Hossain, MJ & Orchi, TF 2015, 'Distributed Multi-Agent-Based Protection Scheme for Transient Stability Enhancement in Power Systems', International Journal of Emerging Electric Power Systems, vol. 16, no. 2, pp. 117-129.
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Abstract
This paper presents a new distributed agent-based scheme to enhance the transient stability of power systems by maintaining phase angle cohesiveness of interconnected generators through proper relay coordination with critical clearing time (CCT) information. In this distributed multi-agent infrastructure, intelligent agents represent various physical device models to provide dynamic information and energy flow among different physical processes of power systems. The agents can communicate with each other in a distributed manner with a final aim to control circuit breakers (CBs) with CCT information as this is the key issue for maintaining and enhancing the transient stability of power systems. The performance of the proposed scheme is evaluated on a standard IEEE 39-bus New England benchmark system under different large disturbances such as three-phase short-circuit faults and changes in loads within the systems. From the simulation results, it is found that the proposed scheme significantly enhances the transient stability of power systems as compared to a conventional scheme of static CB operation.
Raja Ismail, RMT, That, ND & Ha, QP 2015, 'Modelling and robust trajectory following for offshore container crane systems', Automation in Construction, vol. 59, pp. 179-187.
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Ramezani, F, Lu, J, Taheri, J & Hussain, FK 2015, 'Evolutionary algorithm-based multi-objective task scheduling optimization model in cloud environments', WORLD WIDE WEB-INTERNET AND WEB INFORMATION SYSTEMS, vol. 18, no. 6, pp. 1737-1757.
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Rana, M & Li, L 2015, 'An Overview of Distributed Microgrid State Estimation and Control for Smart Grids', Sensors, vol. 15, no. 2, pp. 4302-4325.
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Rana, MM & Li, L 2015, 'Microgrid state estimation and control for smart grid and Internet of Things communication network', ELECTRONICS LETTERS, vol. 51, no. 2, pp. 149-150.
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Rana, MM, Li, L & Su, S 2015, 'Distributed State Estimation Using RSC Coded Smart Grid Communications', IEEE Access, vol. 3, pp. 1340-1349.
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© 2013 IEEE. Recently, the renewable distributed energy resources (DERs) have become more and more popular due to carbon-free energy sources and environment-friendly electricity generation. Unfortunately, these power generation patterns are mostly intermittent in nature and distributed over the electrical grid, which creates challenging problems in the reliability of the smart grid. Thus, the smart grid has a strong requisite for an efficient communication infrastructure to facilitate estimating the DER states. In contrast to the traditional methods of centralized state estimation (SE), we propose a distributed approach to microgrid SE based on the concatenated coding structure. In this framework, the DER state is treated as a dynamic outer code, and the recursive systematic convolutional (RSC) code is seen as a concatenated inner code for protection and redundancy in the system states. Furthermore, in order to properly monitor the intermittent energy source from any place, this paper proposes a distributed SE method. Particularly, the outputs of the local SE are treated as measurements, which are fed into the master fusion station. At the end, the global SE can be obtained by combining local SEs with corresponding weighting factors. The weighting factors can be calculated by inspiring the covariance intersection method. The simulation results show that the proposed method is able to estimate the system state properly.
Ranjbar Kermany, A & Iacopi, F 2015, 'Controlling the intrinsic bending of hetero-epitaxial silicon carbide micro-cantilevers', Journal of Applied Physics, vol. 118, no. 15, pp. 155304-155304.
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We introduce a simple methodology to predict and tailor the intrinsic bending of a cantilever made of a single thin film of hetero-epitaxial silicon carbide grown on silicon. The combination of our novel method for the depth profiling of residual stress with a few nm resolution with finite element modelling allows for the prediction of the bending behaviour with great accuracy. We also demonstrate experimentally that a silicon carbide cantilever made of one distinct film type can be engineered to obtain the desired degree of either upward, flat, or downward bending, by selecting the appropriate thickness and cantilever geometry. A precise control of cantilever bending is crucial for microelectrical mechanical system applications such as micro-actuators, micro-switches, and resonant sensors.
Rashedul, HK, Masjuki, HH, Kalam, MA, Teoh, YH, How, HG & Rizwanul Fattah, IM 2015, 'Effect of antioxidant on the oxidation stability and combustion–performance–emission characteristics of a diesel engine fueled with diesel–biodiesel blend', Energy Conversion and Management, vol. 106, pp. 849-858.
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Rattananurak, W, Chang, J-S, Wattanachira, S, Johir, MAH & Vigneswaran, S 2015, 'A novel plate settler in immersed membrane bioreactor (iMBR) in reducing membrane fouling', Desalination and Water Treatment, vol. 55, no. 1, pp. 10-16.
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Reales, E, Bernabé-Rubio, M, Casares-Arias, J, Rentero, C, Fernández-Barrera, J, Rangel, L, Correas, I, Enrich, C, Andrés, G & Alonso, MA 2015, 'The MAL protein is crucial for proper membrane condensation at the ciliary base, which is required for primary cilium elongation', Journal of Cell Science, vol. 128, no. 12, pp. 2261-2270.
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ABSTRACT
The base of the primary cilium contains a zone of condensed membranes whose importance is not known. Here, we have studied the involvement of MAL, a tetraspanning protein that exclusively partitions into condensed membrane fractions, in the condensation of membranes at the ciliary base and investigated the importance of these membranes in primary cilium formation. We show that MAL accumulates at the ciliary base of epithelial MDCK cells. Knockdown of MAL expression resulted in a drastic reduction in the condensation of membranes at the ciliary base, the percentage of ciliated cells and the length of the cilia, but did not affect the docking of the centrosome to the plasma membrane or produce missorting of proteins to the pericentriolar zone or to the membrane of the remaining cilia. Rab8 (for which there are two isoforms, Rab8A and Rab8b), IFT88 and IFT20, which are important components of the machinery of ciliary growth, were recruited normally to the ciliary base of MAL-knockdown cells but were unable to elongate the primary cilium correctly. MAL, therefore, is crucial for the proper condensation of membranes at the ciliary base, which is required for efficient primary cilium extension.
Reham, SS, Masjuki, HH, Kalam, MA, Shancita, I, Rizwanul Fattah, IM & Ruhul, AM 2015, 'Study on stability, fuel properties, engine combustion, performance and emission characteristics of biofuel emulsion', Renewable and Sustainable Energy Reviews, vol. 52, pp. 1566-1579.
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Rehman, Z-U, Hussain, OK & Hussain, FK 2015, 'User-side cloud service management: State-of-the-art and future directions', Journal of Network and Computer Applications, vol. 55, pp. 108-122.
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Reich, A, Rooney, D, Gardner, A, Willey, K, Boud, D & Fitzgerald, T 2015, 'Engineers' professional learning: a practice-theory perspective', European Journal of Engineering Education, vol. 40, no. 4, pp. 366-379.
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With the increasing challenges facing professional engineers working in more complex, global and interdisciplinary contexts, different approaches to understanding how engineers practice and learn are necessary. This paper draws on recent research in the social sciences from the field of workplace learning, to suggest that a practice-theory perspective on engineers' professional learning is fruitful. It shifts the focus from the attributes of the individual learner (knowledge, skills and attitudes) to the attributes of the practice (interactions, materiality, opportunities and challenges). Learning is thus more than the technical acquisition and transfer of knowledge, but a complex bundle of activities, that is, social, material, embodied and emerging. The paper is illustrated with examples from a research study of the learning of experienced engineers in the construction industry to demonstrate common practices – site walks and design review meetings – in which learning takes place.
Ren, J, Liu, Q, Ellis, J & Li, J 2015, 'Positive-unlabeled learning for the prediction of conformational B-cell epitopes', BMC BIOINFORMATICS, vol. 16.
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Ren, L-F, Liang, S, Ngo, HH, Guo, W, Ni, S-Q, Liu, C, Zhao, Y-K & Hira, D 2015, 'Enhancement of anammox performance in a novel non-woven fabric membrane bioreactor (nMBR)', RSC Advances, vol. 5, no. 106, pp. 86875-86884.
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As well as a membrane separator, a non-woven fabric module could be employed as a biomass carrier to enhance microorganism proliferation and nitrogen removal.
Rezazadeh, J, Moradi, M, Ismail, AS & Dutkiewicz, E 2015, 'Impact of static trajectories on localization in wireless sensor networks', Wireless Networks, vol. 21, no. 3, pp. 809-827.
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Rijal, R, Samali, B, Shrestha, R & Crews, K 2015, 'Experimental and analytical study on dynamic performance of timber-concrete composite beams', Construction and Building Materials, vol. 75, pp. 46-53.
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Rizoiu, M-A, Velcin, J & Lallich, S 2015, 'Semantic-enriched Visual Vocabulary Construction in a Weakly Supervised Context', Intelligent Data Analysis, vol. 19, no. 1, pp. 1-185.
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One of the prevalent learning tasks involving images is content-based image
classification. This is a difficult task especially because the low-level
features used to digitally describe images usually capture little information
about the semantics of the images. In this paper, we tackle this difficulty by
enriching the semantic content of the image representation by using external
knowledge. The underlying hypothesis of our work is that creating a more
semantically rich representation for images would yield higher machine learning
performances, without the need to modify the learning algorithms themselves.
The external semantic information is presented under the form of non-positional
image labels, therefore positioning our work in a weakly supervised context.
Two approaches are proposed: the first one leverages the labels into the visual
vocabulary construction algorithm, the result being dedicated visual
vocabularies. The second approach adds a filtering phase as a pre-processing of
the vocabulary construction. Known positive and known negative sets are
constructed and features that are unlikely to be associated with the objects
denoted by the labels are filtered. We apply our proposition to the task of
content-based image classification and we show that semantically enriching the
image representation yields higher classification performances than the
baseline representation.
Rizoiu, M-A, Velcin, J & Lallich, S 2015, 'Unsupervised Feature Construction for Improving Data Representation and Semantics', Journal of Intelligent Information Systems, vol. 40, iss. 3, pp. 501-527, 2013, vol. 40, no. 3, pp. 501-527.
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Feature-based format is the main data representation format used by machine
learning algorithms. When the features do not properly describe the initial
data, performance starts to degrade. Some algorithms address this problem by
internally changing the representation space, but the newly-constructed
features are rarely comprehensible. We seek to construct, in an unsupervised
way, new features that are more appropriate for describing a given dataset and,
at the same time, comprehensible for a human user. We propose two algorithms
that construct the new features as conjunctions of the initial primitive
features or their negations. The generated feature sets have reduced
correlations between features and succeed in catching some of the hidden
relations between individuals in a dataset. For example, a feature like $sky
\wedge \neg building \wedge panorama$ would be true for non-urban images and is
more informative than simple features expressing the presence or the absence of
an object. The notion of Pareto optimality is used to evaluate feature sets and
to obtain a balance between total correlation and the complexity of the
resulted feature set. Statistical hypothesis testing is used in order to
automatically determine the values of the parameters used for constructing a
data-dependent feature set. We experimentally show that our approaches achieve
the construction of informative feature sets for multiple datasets.
Rocha, C, Formoso, C & Tzortzopoulos, P 2015, 'Adopting Product Modularity in House Building to Support Mass Customisation', Sustainability, vol. 7, no. 5, pp. 4919-4937.
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Rooney, D, Gardner, A, Willey, K, Reich, A, Boud, D & Fitzgerald, T 2015, 'Reimagining site-walks: Sites for rich learning', Australasian Journal of Engineering Education, vol. 20, no. 1, pp. 19-30.
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This paper presents the preliminary results of a multi-phased qualitative investigation of continuing professional learning. The study focused on the identification of common engineering practices that contribute to learning. This paper examines a particular practice, that of the site-walk. It draws on practice theory, an emerging set of conceptual resources used in workplace learning research. Data was elicited via qualitative methods such as interviews, focus groups and site visits with experienced engineers employed in a large Australian engineering company. It was analysed using the lens of practice theory. The findings suggest that site-walks, while an everyday practice for engineers, are also highly learning-rich. This understanding has implications for continual professional learning, and for educators of novice engineers.
Roser, C, Lorentzen, K & Deuse, J 2015, 'Reliable shop floor bottleneck detection for flow lines through process and inventory observations: the bottleneck walk', Logistics Research, vol. 8, no. 1.
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© 2015, The Author(s). Bottleneck detection in manufacturing is the key to improving production efficiency and stability in order to improve capacity. Yet, common bottleneck detection methods in industry and academia lack either accuracy or practicability, or both, for dynamic systems. The new methodology is conducted by the observation of processes and inventories. Blocked processes and full inventories indicate a downstream bottleneck. Starved processes and empty inventories indicate an upstream bottleneck. Through subsequent observations of multiple process states and inventory levels within a system, it is possible to determine the direction of the bottleneck at the given time and hence to find the momentary bottleneck in the system. The shifting of bottlenecks can be observed directly. Work sampling techniques can be used to obtain a long-term picture of the dynamically shifting bottleneck. The new methodology does not require any calculations, statistics, or time measurements. Hence, the method is suited for practical use by shop floor supervisors and clerks. The direct observation of the bottleneck also gives additional information about the underlying causes of the bottlenecks, simplifying the improvement of the system capacity. Extensive field testing of the method received positive feedback not only from management but also from shop floor operators. The method is already in use at the Robert Bosch GmbH, where it is known as the bottleneck walk.
Rost, M, Zilberg, E, Xu, ZM, Feng, Y, Burton, D & Lal, S 2015, 'Comparing Contribution of Algorithm Based Physiological Indicators for Characterisation of Driver Drowsiness', Journal of Medical and Bioengineering, vol. 4, no. 5, pp. 391-398.
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Rufangura, P & Sabah, C 2015, 'Dual-band perfect metamaterial absorber for solar cell applications', Vacuum, vol. 120, pp. 68-74.
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Rufangura, P & Sabah, C 2015, 'Polarization angle insensitive dual‐band perfect metamaterial absorber for solar cell applications', physica status solidi c, vol. 12, no. 9-11, pp. 1241-1245.
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AbstractA metamaterial absorber that effectively harvests solar energy is being proposed in this paper using a simple and high flexible structure. The proposed structure unit cell comprises of three vital layers. The ground metallic plane, an intermediate dielectric spacer while patches are wisely prepared on the top of a dielectric spacer. Geometrical parameters of the proposed metamaterial is studied in order to get insight on their impact for the absorption behaviour of the structure. The results from simulation provides two excellent absorption resonance (99.96% and 99.37%) in the visible spectrum range of electromagnetic wave. Due to the excellent symmetry of the proposed metamaterial design, its absorption coefficient is polarisation insensitive for a wide range of incident angles of electromagnetic radiations. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Ruhul, AM, Kalam, MA, Masjuki, HH, Fattah, IMR, Reham, SS & Rashed, MM 2015, 'State of the art of biodiesel production processes: a review of the heterogeneous catalyst', RSC Advances, vol. 5, no. 122, pp. 101023-101044.
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This study described the latest technology for fixed batch and continues biodiesel production for both laboratory and industrial scale as well as the role of the heterogeneous catalyst in biodiesel production process.
Rujikiatkamjorn, C & Indraratna, B 2015, 'Analytical solution for radial consolidation considering soil structure characteristics', Canadian Geotechnical Journal, vol. 52, no. 7, pp. 947-960.
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A system of surcharge load combined with vertical drains to speed up consolidation of soft soil by reducing the drainage path is one of the most efficient and economical ground improvement techniques. In the field, conventional theories including smear zone have been commonly employed to predict the radial consolidation behaviour induced by vertical drains in soft clay. One of the key parameters in conventional analysis is the use of mean coefficient of volume compressibility and soil permeability, which are often assumed to be constant. The effect of drain installation on the soil compressibility of the in situ clay structure is often ignored. Laboratory testing has shown that the soil compressibility and permeability can vary nonlinearly over a considerable range of applied surcharge pressure, and both these properties can be affected during the drain installation. This study presents a mathematical model of radial consolidation via vertical drains incorporating the variations of soil compressibility and permeability as well as highlighting the effects of drain installation on those parameters. The main differences between the proposed and conventional models are elucidated, in terms of stress history and preloading (surcharge) pressure. The effects of preconsolidation pressure and the magnitude of applied preloading are examined through the dissipation of average excess pore pressure and associated settlement. Supported by experimental observations, the proposed theory is validated with field data of a selected case study in the town of Ballina, New South Wales, Australia.
Rujikiatkamjorn, C & Indraratna, B 2015, 'Briefing: Effect of drain installation patterns on rate of consolidation', Proceedings of the Institution of Civil Engineers - Ground Improvement, vol. 168, no. 4, pp. 236-245.
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Prefabricated vertical drains (PVDs) are employed to accelerate consolidation by decreasing the drainage path length. In the present study, using analytical solutions, an attempt was made to evaluate and quantify the effectiveness of two non-conventional PVD installation patterns, involving a parallel drain wall compared with a circular drain ring pattern, in contrast to conventional PVD installation (square or triangular patterns). The governing equations are based on the equal strain theory including the smear effect, and they provide a relative comparison between the two newly proposed installation patterns and the conventional square PVD grid, in terms of both the consolidation time and the equivalent drain spacing. The comparisons between the new and conventional installation patterns are made based on a single drain analysis and the density of PVDs per unit area.
Ryan, R & Hastings, C 2015, 'Missed opportunities for democratic engagement: the adoption of community indicators in local government', Asia Pacific Journal of Public Administration, vol. 37, no. 1, pp. 33-43.
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Community indicators, as a framework for the measurement of community wellbeing and progress established in collaboration with the community itself, have more than three decades of history in the United States. Although community indicator projects developed in Australia from the 1990s onwards, particularly by local governments, they have primarily been used as a reporting tool rather than as an instrument for democratic engagement and evidence-based policy development. In this article, an analysis is provided of the range of approaches to community indicators in Australia and the United States. The argument is made for the use of community indicators to enhance the democratic capacity of local government. The aim is to stimulate discussion about the potential benefits of community indicator projects for local government in Australia and increase understanding of the possible extent of their application.
Safavi-Naeini, M, Han, Z, Alnaghy, S, Cutajar, D, Petasecca, M, Lerch, MLF, Franklin, DR, Bucci, J, Carrara, M, Zaider, M & Rosenfeld, AB 2015, 'BrachyView, a novel in-body imaging system for HDR prostate brachytherapy: Experimental evaluation', MEDICAL PHYSICS, vol. 42, no. 12, pp. 7098-7107.
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Purpose:
This paper presents initial experimental results from a prototype of high dose rate (HDR) BrachyView, a novel in-body source tracking system for HDR brachytherapy based on a multipinhole tungsten collimator and a high resolution pixellated silicon detector array. The probe and its associated position estimation algorithms are validated and a comprehensive evaluation of the accuracy of its position estimation capabilities is presented.
Methods:
The HDR brachytherapy source is moved through a sequence of positions in a prostate phantom, for various displacements in x, y, and z. For each position, multiple image acquisitions are performed, and source positions are reconstructed. Error estimates in each dimension are calculated at each source position and combined to calculate overall positioning errors. Gafchromic film is used to validate the accuracy of source placement within the phantom.
Results:
More than 90% of evaluated source positions were estimated with an error of less than one millimeter, with the worst-case error being 1.3 mm. Experimental results were in close agreement with previously published Monte Carlo simulation results.
Conclusions:
The prototype of HDR BrachyView demonstrates a satisfactory level of accuracy in its source position estimation, and additional improvements are achievable with further refinement of HDR BrachyView's image processing algorithms.
Saha, SC & Gu, YT 2015, 'Natural convection in a triangular enclosure heated from below and non-uniformly cooled from top', International Journal of Heat and Mass Transfer, vol. 80, pp. 529-538.
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Sahebi, S, Phuntsho, S, Kim, JE, Hong, S & Shon, HK 2015, 'Pressure assisted fertiliser drawn osmosis process to enhance final dilution of the fertiliser draw solution beyond osmotic equilibrium', JOURNAL OF MEMBRANE SCIENCE, vol. 481, pp. 63-72.
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Sajjad, H, Masjuki, HH, Varman, M, Kalam, MA, Arbab, MI, Imtenan, S & Ashraful, AM 2015, 'Influence of gas-to-liquid (GTL) fuel in the blends of Calophyllum inophyllum biodiesel and diesel: An analysis of combustion–performance–emission characteristics', Energy Conversion and Management, vol. 97, pp. 42-52.
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Salisa, AR, Walker, PD, Zhang, N & Zhu, JG 2015, 'COMPARATIVE COST-BASED ANALYSIS OF A NOVEL PLUG-IN HYBRID ELECTRIC VEHICLE WITH CONVENTIONAL AND HYBRID ELECTRIC VEHICLES', International Journal of Automotive and Mechanical Engineering, vol. 11, no. 1, pp. 2262-2271.
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© 2015 Universiti Malaysia Pahang. Hybrid electric vehicles provide higher fuel efficiency and lower emissions through the combination of the conventional internal combustion engine with electric machines. This paper analyzes and compares two types of hybrid electric powertrain with a conventional vehicle powertrain to study the lifetime costs of these vehicles. The novelty of the University of Technology Sydney plug-in hybrid electric vehicle (UTS PHEV) arises through a special power-splitting device and energy management strategy. The UTS PHEV and comparative powertrains are studied through numerical simulations to determine fuel consumption for the proposed low and high congestion drive cycles. Satisfactory results are achieved in terms of fuel economy, the all-electric range and electrical energy consumption for the UTS PHEV powertrain, providing significant improvement over the alternative powertrains. The analysis of these vehicles is extended to include a cost-based analysis of each powertrain in order to estimate the total lifetime costs at different fuel prices. The results obtained from this analysis demonstrate that whilst the conventional powertrain is cheaper in terms of purchase and maintenance costs, both alternative configurations are more cost-effective overall as the average price of fuel increases.
Salman, AM, Li, Y & Stewart, MG 2015, 'Evaluating system reliability and targeted hardening strategies of power distribution systems subjected to hurricanes', Reliability Engineering & System Safety, vol. 144, pp. 319-333.
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Over the years, power distribution systems have been vulnerable to extensive damage from hurricanes which can cause power outage resulting in millions of dollars of economic losses and restoration costs. Most of the outage is as a result of failure of distribution support structures. Over the years, various methods of strengthening distribution systems have been proposed and studied. Some of these methods, such as undergrounding of the system, have been shown to be unjustified from an economic point of view. A potential cost-effective strategy is targeted hardening of the system. This, however, requires a method of determining critical parts of a system that when strengthened, will have greater impact on reliability. This paper presents a framework for studying the effectiveness of targeted hardening strategies on power distribution systems subjected to hurricanes. The framework includes a methodology for evaluating system reliability that relates failure of poles and power delivery, determination of critical parts of a system, hurricane hazard analysis, and consideration of decay of distribution poles. The framework also incorporates cost analysis that considers economic losses due to power outage. A notional power distribution system is used to demonstrate the framework by evaluating and comparing the effectiveness of three hardening measures.
Sanjid, A, Masjuki, HH, Kalam, MA, Rahman, SMA, Abedin, MJ & Fattah, IMR 2015, 'Characterization and prediction of blend properties and evaluation of engine performance and emission parameters of a CI engine operated with various biodiesel blends', RSC Advances, vol. 5, no. 17, pp. 13246-13255.
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The present research is aimed to investigate the feasibility of using palm (PB), mustard (MB) and Calophyllum biodiesel (CB) as renewable and alternative fuels.
Sann Tan, E, Palanisamy, K, Meurah Indra Mahlia, T & Yoshikawa, K 2015, 'Performance and emission study on waste cooking oil biodiesel and distillate blends for microturbine application', AIMS Energy, vol. 3, no. 4, pp. 798-809.
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Sarker, L, Xiang, Y, Zhu, XQ & Zhang, YY 2015, 'Damage detection of circular cylindrical shells by ritz method and wavelet analysis', Electronic Journal of Structural Engineering, vol. 14, no. 1, pp. 62-74.
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This paper presents a new technique based on the Ritz method for the damage detection of circular cylindrical shell structures. Sander's thin shell theory together with the Ritz method is used to analyse the dynamic behaviour of circular cylindrical shells. The crack damage on the shell surface is modelled by a rotational line spring along the circumference of the shell. Different damage scenarios are investigated by changing the crack locations and rotational spring stiffness. Modal parameters of shells with different damage patterns are obtained and compared. Wavelet analysis is carried out to detect the discontinuities in the mode shape where the damage is presented. It is found from the numerical results that the natural frequencies of the shell are insensitive to the crack damage. The wavelet analysis is effective to detect the damage in the circular cylindrical shell.
Sathi, ZM, Zhang, J, Luo, Y, Canning, J & Peng, GD 2015, 'Improving broadband emission within Bi/Er doped silicate fibres with Yb co-doping', Optical Materials Express, vol. 5, no. 10, pp. 2096-2096.
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Sathi, ZM, Zhang, J, Luo, Y, Canning, J & Peng, GD 2015, 'Spectral properties and role of aluminium-related bismuth active centre (BAC-Al) in bismuth and erbium co-doped fibres', OPTICAL MATERIALS EXPRESS, vol. 5, no. 5, pp. 1195-1209.
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Sato, H, Manabe, K, Ito, K, Wei, D & Jiang, Z 2015, 'Development of servo-type micro-hydromechanical deep-drawing apparatus and micro deep-drawing experiments of circular cups', Journal of Materials Processing Technology, vol. 224, pp. 233-239.
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Sato, H, Manabe, K, Wei, DB, Jiang, ZY & Kondo, D 2015, 'Micro Sheet Hydroforming Process of Ultra-Thin Pure Titanium Foil', Key Engineering Materials, vol. 626, pp. 397-401.
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A micro hydromechanical deep drawing is carried out using the pure titanium and the effect of fluid pressure on formability of pure titanium is investigated. The experiments are performed using the two kinds of pure titanium foils (TR270C-H and TR270C-O) and stainless steel foil (SUS304-H) with 50 thickness and the cylindrical and conical punches. As a result, it is found that the peeling off the oxide film of pure titanium can be reduced by applying the fluid pressure because the friction force and contact pressure between the blank and die decreases. However, the formability is lower for pure titanium than that for stainless steel because the tensile strength is low and the friction force is easy to increase as the friction force increases. In contrast, due to the low young modulus of pure titanium, the restriction of wrinkling, decrease of friction force and friction holding effect can be obtained at low fluid pressure.
Schockaert, S & Li, S 2015, 'Realizing RCC8 networks using convex regions', Artificial Intelligence, vol. 218, pp. 74-105.
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RCC8 is a popular fragment of the region connection calculus, in which qualitative spatial relations between regions, such as adjacency, overlap and parthood, can be expressed. While RCC8 is essentially dimensionless, most current applications are confined to reasoning about two-dimensional or three-dimensional physical space. In this paper, however, we are mainly interested in conceptual spaces, which typically are high-dimensional Euclidean spaces in which the meaning of natural language concepts can be represented using convex regions. The aim of this paper is to analyze how the restriction to convex regions constrains the realizability of networks of RCC8 relations. First, we identify all ways in which the set of RCC8 base relations can be restricted to guarantee that consistent networks can be convexly realized in respectively 1D, 2D, 3D, and 4D. Most surprisingly, we find that if the relation ‘partially overlaps’ is disallowed, all consistent atomic RCC8 networks can be convexly realized in 4D. If instead refinements of the relation ‘part of’ are disallowed, all consistent atomic RCC8 relations can be convexly realized in 3D. We furthermore show, among others, that any consistent RCC8 network with 2n+1 variables can be realized using convex regions in the n-dimensional Euclidean space.
Schoene, D, Valenzuela, T, Toson, B, Delbaere, K, Severino, C, Garcia, J, Davies, TA, Russell, F, Smith, ST & Lord, SR 2015, 'Interactive Cognitive-Motor Step Training Improves Cognitive Risk Factors of Falling in Older Adults – A Randomized Controlled Trial', PLOS ONE, vol. 10, no. 12, pp. e0145161-e0145161.
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PURPOSE: Interactive cognitive-motor training (ICMT) requires individuals to perform both gross motor movements and complex information processing. This study investigated the effectiveness of ICMT on cognitive functions associated with falls in older adults. METHODS: A single-blinded randomized controlled trial was conducted in community-dwelling older adults (N = 90, mean age 81.5±7) without major cognitive impairment. Participants in the intervention group (IG) played four stepping games that required them to divide attention, inhibit irrelevant stimuli, switch between tasks, rotate objects and make rapid decisions. The recommended minimum dose was three 20-minute sessions per week over a period of 16 weeks unsupervised at home. Participants in the control group (CG) received an evidence-based brochure on fall prevention. Measures of processing speed, attention/executive function (EF), visuo-spatial ability, concerns about falling and depression were assessed before and after the intervention. RESULTS: Eighty-one participants (90%) attended re-assessment. There were no improvements with respect to the Stroop Stepping Test (primary outcome) in the intervention group. Compared to the CG, the IG improved significantly in measures of processing speed, visuo-spatial ability and concern about falling. Significant interactions were observed for measures of EF and divided attention, indicating group differences varied for different levels of the covariate with larger improvements in IG participants with poorer baseline performance. The interaction for depression showed no change for the IG but an increase in the CG for those with low depressive symptoms at baseline. Additionally, low and high-adherer groups differed in their baseline performance and responded differently to the intervention. Compared to high adherers, low adherers improved more in processing speed and visual scanning while high-adherers improved more in tasks related to EF. CONCLUSIONS: This study sho...
Scofield, JMP, Gurr, PA, Kim, J, Fu, Q, Halim, A, Kentish, SE & Qiao, GG 2015, 'High-performance thin film composite membranes with well-defined poly(dimethylsiloxane)-b-poly(ethylene glycol) copolymer additives for CO2 separation', Journal of Polymer Science Part A: Polymer Chemistry, vol. 53, no. 12, pp. 1500-1511.
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Semblante, GU, Hai, FI, Bustamante, H, Guevara, N, Price, WE & Nghiem, LD 2015, 'Effects of iron salt addition on biosolids reduction by oxic-settling-anoxic (OSA) process', International Biodeterioration & Biodegradation, vol. 104, pp. 391-400.
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Semblante, GU, Hai, FI, Huang, X, Ball, AS, Price, WE & Nghiem, LD 2015, 'Trace organic contaminants in biosolids: Impact of conventional wastewater and sludge processing technologies and emerging alternatives', Journal of Hazardous Materials, vol. 300, pp. 1-17.
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Sepehrirahnama, S, Lim, K-M & Chau, FS 2015, 'Numerical Analysis of the Acoustic Radiation Force and Acoustic Streaming Around a Sphere in an Acoustic Standing Wave', Physics Procedia, vol. 70, pp. 80-84.
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Sepehrirahnama, S, Lim, K-M & Chau, FS 2015, 'Numerical study of interparticle radiation force acting on rigid spheres in a standing wave', The Journal of the Acoustical Society of America, vol. 137, no. 5, pp. 2614-2622.
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Acoustic radiation force can be used to move micro-sized particles, such as cells, in microfluidic devices. Although the number of particles in a microfluidic device is large, typically 2.5% (weight/volume), the acoustic force acting on a particle is commonly calculated using an analytical formula for a single particle in infinite medium. The interparticle forces are typically ignored as these are not easily accounted for and calculated with simple closed-form solutions. Based on the isothermal theory for an ideal fluid, a numerical scheme is hereby proposed to calculate the total radiation force, including the interparticle forces. The method uses the multipole series expansion and the weighted residual method to solve the governing Helmholtz equation with the necessary boundary conditions on the particle surface. The effect of different parameters on the primary and interparticle forces is studied using the proposed numerical scheme. It is shown that, near the pressure node, the interparticle forces are dominant and configurations of the spheres are determined by the interparticle forces. The proposed numerical scheme can be used for various sizes of spherical particles.
Sercombe, TB, Xu, X, Challis, VJ, Green, R, Yue, S, Zhang, Z & Lee, PD 2015, 'Failure modes in high strength and stiffness to weight scaffolds produced by Selective Laser Melting', Materials & Design, vol. 67, pp. 501-508.
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Shahid, M, McDonagh, A, Kim, JH & Shon, HK 2015, 'Magnetised titanium dioxide (TiO2) for water purification: preparation, characterisation and application', Desalination and Water Treatment, vol. 54, no. 4-5, pp. 979-1002.
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The study of titanium dioxide (TiO2) as a photocatalyst for water purification has attracted significant attention over the past four decades. However, the separation of photocatalyst from water suspension may be difficult, costly and jeopardise the use of this water treatment technology. Recently, the development and production of magnetised TiO2 have been achieved to offer a solution for the photocatalyst separation problem. This paper discusses the preparation techniques, characterisation and the applications of magnetised TiO2. Many researchers have studied magnetised TiO2 photocatalysts but the lack of articles discussing the water purification processes is still slowing any advance in this field. Here, the progress of the scientific research on preparation techniques to coat magnetic particles by materials such as organic polymers, silica, magnesia, and alumina are reviewed to compare and discuss recent findings. The doping of photoactive TiO2 photocatalyst into the magnetic-coated particles is also emphasised. In addition, the characterisation of magnetised TiO2 in terms of physicochemical properties and operating conditions produced by each technique are critically reviewed. Moreover, examples of applications of TiO2 and magnetised TiO2 photocatalyst in water purification are summarised. In general, the effectiveness of organic removal by magnetised TiO2 is still lower compared to single phase TiO2. The future prospect of this field is deliberated to develop a novel, economic and efficient magnetised TiO2 photocatalyst, which has high organic removal properties.
Shahid, M, Saliby, IE, Tijing, LD, McDonagh, A, Park, SM, Lee, KY, Shon, HK & Kim, J-H 2015, 'Synthesis and Characterisation of Silica-Modified Titania for Photocatalytic Decolouration of Crystal Violet', Journal of Nanoscience and Nanotechnology, vol. 15, no. 7, pp. 5326-5329.
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In the past few years, silica-modified titania has drawn increasing attention due to their special properties making them ideal candidates for a wide range of applications. In this study, we report a novel method for the synthesis of silica-modified titania by a sol–gel method using sodium silicate solution (1 M). The hydrolysis and condensation reactions of titanium dioxide (TiO2, Degussa Aeroxide® P25) in sodium silicate solution proceeded with citric acid (3 M) as a catalyst. The orbital shaking method was followed for the removal of sodium salt formed during the sol–gel process. Solvent exchange was carried out using methanol and hexane. Finally, chemical modification of the gel was conducted using trimethylchlorosilane followed by ambient pressure drying. The obtained silica-modified titania was characterised for nanostructural analysis using scanning electron microscopy and transmission electron microscopy. The nitrogen adsorption–desorption measurements were employed to investigate the BET surface area, pore structure and pore volume of specimens. Thermal gravimetric analysis showed exothermic peaks at temperature range of 90–190 °C representing the oxidation of organic groups from –Si–R network. The silica-modified titania showed high photocatalytic activity and an easy recovery using crystal violet as model water pollutant.
Shahir, SA, Masjuki, HH, Kalam, MA, Imran, A & Ashraful, AM 2015, 'Performance and emission assessment of diesel–biodiesel–ethanol/bioethanol blend as a fuel in diesel engines: A review', Renewable and Sustainable Energy Reviews, vol. 48, pp. 62-78.
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Shambour, Q & Lu, J 2015, 'An effective recommender system by unifying user and item trust information for B2B applications', JOURNAL OF COMPUTER AND SYSTEM SCIENCES, vol. 81, no. 7, pp. 1110-1126.
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Shanmuganathan, S, Johir, MAH, Nguyen, TV, Kandasamy, J & Vigneswaran, S 2015, 'Experimental evaluation of microfiltration-granular activated carbon (MF-GAC)/nano filter hybrid system in high quality water reuse', JOURNAL OF MEMBRANE SCIENCE, vol. 476, pp. 1-9.
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Shanmuganathan, S, Nguyen, TV, Jeong, S, Kandasamy, J & Vigneswaran, S 2015, 'Submerged membrane - (GAC) adsorption hybrid system in reverse osmosis concentrate treatment', SEPARATION AND PURIFICATION TECHNOLOGY, vol. 146, pp. 8-14.
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Wastewater reclamation plants using reverse osmosis as the final polishing treatment produce reverse osmosis concentrate (ROC), which consists of high salinity, nutrients and (recalcitrant) organics. The ROC collected from the water reclamation plant in Sydney was treated with a micro filtration (MF)–GAC hybrid system that removed natural and synthetic organics prior to its discharge into the environment. The MF–GAC hybrid system’s performance was studied in terms of trans-membrane pressure (TMP) development, and organics removal. These features were measured using liquid chromatography–organic carbon detection (LC–OCD), Fluorescence Excitation-Emission matrix (F-EEM), and Liquid chromatography with tandem mass spectroscopy (LC–MS). Adding GAC into the membrane reactor reduced the TMP by reducing membrane fouling both through mechanical scouring and pre-adsorption of organics. F-EEM confirms the removal of humics-like and fulvic-like compounds by GAC from ROC. Pharmaceuticals and personal care products (PPCPs) were also removed by the MF–GAC hybrid system
Shanmuganathan, S, Vigneswaran, S, Nguyen, TV, Loganathan, P & Kandasamy, J 2015, 'Use of nanofiltration and reverse osmosis in reclaiming micro-filtered biologically treated sewage effluent for irrigation', DESALINATION, vol. 364, pp. 119-125.
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Shariati, N, Rowe, WST, Scott, JR & Ghorbani, K 2015, 'Multi-Service Highly Sensitive Rectifier for Enhanced RF Energy Scavenging', SCIENTIFIC REPORTS, vol. 5.
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Sharma, M, Qadir, A, Khalilpour, R & Abbas, A 2015, 'Modeling and analysis of process configurations for solvent-based post-combustion carbon capture', Asia-Pacific Journal of Chemical Engineering, vol. 10, no. 5, pp. 764-780.
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Sharma, N, Shivakumara, P, Pal, U, Blumenstein, M & Tan, CL 2015, 'Piece-wise linearity based method for text frame classification in video', Pattern Recognition, vol. 48, no. 3, pp. 862-881.
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Shemesh, J, Jalilian, I, Shi, A, Heng Yeoh, G, Knothe Tate, ML & Ebrahimi Warkiani, M 2015, 'Flow-induced stress on adherent cells in microfluidic devices', Lab on a Chip, vol. 15, no. 21, pp. 4114-4127.
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The article describes flow-induced stress on adherent cells in microfluidics devices in light of ongoing discoveries in mechanobiology.
Shen, L, Lu, DD & Li, C 2015, 'Adaptive sliding mode control method for DC–DC converters', IET Power Electronics, vol. 8, no. 9, pp. 1723-1732.
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Shenoy, AU & Shenoy, UV 2015, 'Continuous targeting and network design for zero wastewater discharge in water system integration', Journal of Cleaner Production, vol. 87, no. 1, pp. 627-641.
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© 2014 Elsevier Ltd. All rights reserved. Electric mobility is a topic of intense discussions in academia and industry since the stability of future energy supply as well as the associated environmental consequences are uncertain. Therefore, it is necessary to evaluate the research and development status of battery technologies for electric vehicles which are reflecting the interface of the automotive, chemical and electronics sector. The present study applies patent families as technological indicators in order to analyze the research activities of each step of the designed battery value chain individually and in comparison with each other to identify and discuss trends regarding the technologies associated to electric vehicles. By applying this explorative approach to the comparably new field, the study contributes to both the scientific literature on patent analysis as well as on emerging industry and value creation structures related to the electric mobility sector. Although the distribution of patents shows an emphasis on active components, the high number of patents covering more than one value chain step points towards the tendency of considering the whole value chain in systemic research approaches. Furthermore, a detailed analysis of patent assignees reveals insights on the knowledge dissemination across the value chain whereby the major share of industry actors still appears to be focused on their respective core competences but also administers important links to other value chain steps. The increase of collaborative activities across steps further hints towards starting shifts in value creation activities.
Shi, L, Wei, D, Ngo, HH, Guo, W, Du, B & Wei, Q 2015, 'Application of anaerobic granular sludge for competitive biosorption of methylene blue and Pb(II): Fluorescence and response surface methodology', Bioresource Technology, vol. 194, pp. 297-304.
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Shi, Y & Stewart, MG 2015, 'Damage and risk assessment for reinforced concrete wall panels subjected to explosive blast loading', International Journal of Impact Engineering, vol. 85, pp. 5-19.
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The structural integrity of reinforced concrete (RC) structures in blast events is important for critical facilities. In this paper, a structural reliability analysis is conducted to predict the damage and risk reduction for RC wall panels subjected to explosive blast loading. Due to considerable uncertainties associated with material properties, dimensions, structural response, blast loading, as well as expected damage, probabilistic methods are used in quantifying the probability of damage for conventional and blast-resistant RC precast cladding wall panels by incorporating spatial and non-spatial variables. The variability of blast loading is also taken into consideration. Monte Carlo simulation and numerical methods are utilized to predict damage of RC wall panels subject to various threat scenarios, based on a physics-based computer programme LS-DYNA to estimate maximum support rotations. It was found that spatial variability of concrete compressive strength and concrete cover has little effects on the structural reliability for precast concrete panels, and the blast-resistant wall has 5%-100% lower probability of hazardous failure than the corresponding value for a conventional wall.
Shi, Y & Stewart, MG 2015, 'Spatial reliability analysis of explosive blast load damage to reinforced concrete columns', Structural Safety, vol. 53, pp. 13-25.
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Columns are the key load-bearing elements in frame structures and exterior columns are probably the most vulnerable structural components to terrorist attack. In this paper, a spatial reliability analysis is conducted to predict the damage for reinforced concrete (RC) columns subject to explosive blast loading. The spatial variability of material and dimensional properties of RC columns are modelled by stationary and non-stationary random fields. The variability of blast loading is also taken into consideration. Monte Carlo simulation and numerical methods are used to derive Blast Reliability Curves for RC columns under explosive loading for a number of terrorism threat scenarios, based on a high-fidelity physics-based computer programme LS-DYNA to estimate design and residual axial load-carrying capacity of RC columns. It was found that spatial variability has a significant effect on structural reliabilities and the spatial model will lead to more accurate predictions of damage and safety risks.
Shirbin, SJ, Ladewig, K, Fu, Q, Klimak, M, Zhang, X, Duan, W & Qiao, GG 2015, 'Cisplatin-Induced Formation of Biocompatible and Biodegradable Polypeptide-Based Vesicles for Targeted Anticancer Drug Delivery', Biomacromolecules, vol. 16, no. 8, pp. 2463-2474.
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Shompa, SS, Afroz, F & Haque, AKMF 2015, 'Analysis on Fractional Frequency Reuse Factor over Traditional Frequency Reuse Factor in Cellular System', IJWMN, vol. vol. 7, no. 5, pp. 77-89.
Shrestha, A, Johir, MAH, Vigneswaran, S & Kandasamy, J 2015, 'A comparative study on in-line flocculation and spiral flocculation followed by media filtration as a pre-treatment of seawater', Desalination and Water Treatment, vol. 55, no. 4, pp. 892-900.
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© 2014 Balaban Desalination Publications. All rights reserved. Abstract: In this study the efficiency of two different flocculation systems namely in-line flocculation and spiral flocculation followed by media filtration (sand or anthracite) have been investigated as a pre-treatment of seawater to reverse osmosis. The performances of these filtration systems were assessed in terms of turbidity removal, head loss development, ultra filter-modified fouling index (UF-MFI) and organic matters removal. Both systems showed 60–70% removal of turbidity. In-line flocculation and filtration showed 2–3 times higher head loss development than spiral flocculation filtration. These filtration systems helped to reduce the fouling potential (in terms of UF-MFI) by 50–73%, whereas dissolved organic carbon-removal efficiency was 30–45%. The fractionation of organic matter showed that both systems removed 70% of hydrophobic organic matters. The removals of hydrophilic organics were around 30–40%. Among the hydrophilic compounds, the removal of biopolymer and lower molecular weight neutrals and acid were higher than that of humic substances’ and building blocks’.
Shu, T & Krunz, M 2015, 'Privacy-Preserving and Truthful Detection of Packet Dropping Attacks in Wireless Ad Hoc Networks', IEEE Transactions on Mobile Computing, vol. 14, no. 4, pp. 813-828.
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Shungin, D, Winkler, TW, Croteau-Chonka, DC, Ferreira, T, Locke, AE, Mägi, R, Strawbridge, RJ, Pers, TH, Fischer, K, Justice, AE, Workalemahu, T, Wu, JMW, Buchkovich, ML, Heard-Costa, NL, Roman, TS, Drong, AW, Song, C, Gustafsson, S, Day, FR, Esko, T, Fall, T, Kutalik, Z, Luan, J, Randall, JC, Scherag, A, Vedantam, S, Wood, AR, Chen, J, Fehrmann, R, Karjalainen, J, Kahali, B, Liu, C-T, Schmidt, EM, Absher, D, Amin, N, Anderson, D, Beekman, M, Bragg-Gresham, JL, Buyske, S, Demirkan, A, Ehret, GB, Feitosa, MF, Goel, A, Jackson, AU, Johnson, T, Kleber, ME, Kristiansson, K, Mangino, M, Mateo Leach, I, Medina-Gomez, C, Palmer, CD, Pasko, D, Pechlivanis, S, Peters, MJ, Prokopenko, I, Stančáková, A, Ju Sung, Y, Tanaka, T, Teumer, A, Van Vliet-Ostaptchouk, JV, Yengo, L, Zhang, W, Albrecht, E, Ärnlöv, J, Arscott, GM, Bandinelli, S, Barrett, A, Bellis, C, Bennett, AJ, Berne, C, Blüher, M, Böhringer, S, Bonnet, F, Böttcher, Y, Bruinenberg, M, Carba, DB, Caspersen, IH, Clarke, R, Warwick Daw, E, Deelen, J, Deelman, E, Delgado, G, Doney, ASF, Eklund, N, Erdos, MR, Estrada, K, Eury, E, Friedrich, N, Garcia, ME, Giedraitis, V, Gigante, B, Go, AS, Golay, A, Grallert, H, Grammer, TB, Gräßler, J, Grewal, J, Groves, CJ, Haller, T, Hallmans, G, Hartman, CA, Hassinen, M, Hayward, C, Heikkilä, K, Herzig, K-H, Helmer, Q, Hillege, HL, Holmen, O, Hunt, SC, Isaacs, A, Ittermann, T, James, AL, Johansson, I, Juliusdottir, T, Kalafati, I-P, Kinnunen, L, Koenig, W, Kooner, IK, Kratzer, W, Lamina, C, Leander, K, Lee, NR, Lichtner, P, Lind, L, Lindström, J, Lobbens, S, Lorentzon, M, Mach, F, Magnusson, PKE, Mahajan, A, McArdle, WL, Menni, C, Merger, S, Mihailov, E, Milani, L, Mills, R, Moayyeri, A, Monda, KL, Mooijaart, SP, Mühleisen, TW, Mulas, A, Müller, G, Müller-Nurasyid, M, Nagaraja, R, Nalls, MA, Narisu, N, Glorioso, N, Nolte, IM, Olden, M, Rayner, NW, Renstrom, F, Ried, JS, Robertson, NR, Rose, LM, Sanna, S, Scharnagl, H, Scholtens, S, Sennblad, B, Seufferlein, T, Sitlani, CM, Vernon Smith, A, Stirrups, K, Stringham, HM, Sundström, J, Swertz, MA, Swift, AJ, Syvänen, A-C, Tayo, BO, Thorand, B, Thorleifsson, G, Tomaschitz, A, Troffa, C, van Oort, FVA, Verweij, N, Vonk, JM, Waite, LL, Wennauer, R, Wilsgaard, T, Wojczynski, MK, Wong, A, Zhang, Q, Hua Zhao, J, Brennan, EP, Choi, M, Eriksson, P, Folkersen, L, Franco-Cereceda, A, Gharavi, AG, Hedman, ÅK & et al. 2015, 'New genetic loci link adipose and insulin biology to body fat distribution', Nature, vol. 518, no. 7538, pp. 187-196.
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Body fat distribution is a heritable trait and a well-established predictor of adverse metabolic outcomes, independent of overall adiposity. To increase our understanding of the genetic basis of body fat distribution and its molecular links to cardiometabolic traits, here we conduct genome-wide association meta-analyses of traits related to waist and hip circumferences in up to 224,459 individuals. We identify 49 loci (33 new) associated with waist-to-hip ratio adjusted for body mass index (BMI), and an additional 19 loci newly associated with related waist and hip circumference measures (P < 5 × 10(-8)). In total, 20 of the 49 waist-to-hip ratio adjusted for BMI loci show significant sexual dimorphism, 19 of which display a stronger effect in women. The identified loci were enriched for genes expressed in adipose tissue and for putative regulatory elements in adipocytes. Pathway analyses implicated adipogenesis, angiogenesis, transcriptional regulation and insulin resistance as processes affecting fat distribution, providing insight into potential pathophysiological mechanisms.
Siddiqa, S, Hossain, MA & Saha, SC 2015, 'Two-phase natural convection flow of a dusty fluid', International Journal of Numerical Methods for Heat & Fluid Flow, vol. 25, no. 7, pp. 1542-1556.
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Purpose
– The purpose of this paper is to conduct a detailed investigation of the two-dimensional natural convection flow of a dusty fluid. Therefore, the incompressible boundary layer flow of a two-phase particulate suspension is investigated numerically over a semi-infinite vertical flat plate. Comprehensive flow formations of the gas and particle phases are given in the boundary layer region. Primitive variable formulation is employed to convert the nondimensional governing equations into the non-conserved form. Three important two-phase mechanisms are discussed, namely, water-metal mixture, oil-metal mixture and air-metal mixture.
Design/methodology/approach
– The full coupled nonlinear system of equations is solved using implicit two point finite difference method along the whole length of the plate.
Findings
– The authors have presented numerical solution of the dusty boundary layer problem. Solutions obtained are depicted through the characteristic quantities, such as, wall shear stress coefficient, wall heat transfer coefficient, velocity distribution and temperature distribution for both phases. Results are interpreted for wide range of Prandtl number Pr (0.005-1,000.0). It is observed that thin boundary layer structures can be formed when mass concentration parameter or Prandtl number (e.g. oil-metal particle mixture) are high.
Originality/value
– The results of the study may be of some interest to...
Silakhori, M, Fauzi, H, Mahmoudian, MR, Metselaar, HSC, Mahlia, TMI & Khanlou, HM 2015, 'Preparation and thermal properties of form-stable phase change materials composed of palmitic acid/polypyrrole/graphene nanoplatelets', Energy and Buildings, vol. 99, pp. 189-195.
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Silitonga, AS, Masjuki, HH, Mahlia, TMI, Ong, HC, Kusumo, F, Aditiya, HB & Ghazali, NNN 2015, 'Schleichera oleosa L oil as feedstock for biodiesel production', Fuel, vol. 156, pp. 63-70.
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Silverman, BG, Hanrahan, N, Bharathy, G, Gordon, K & Johnson, D 2015, 'A systems approach to healthcare: Agent-based modeling, community mental health, and population well-being', Artificial Intelligence in Medicine, vol. 63, no. 2, pp. 61-71.
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Singer, JP, Pelligra, CI, Kornblum, N, Choo, Y, Gopinadhan, M, Bordeenithikasem, P, Ketkaew, J, Fatt Liew, S, Cao, H, Schroers, J & Osuji, CO 2015, 'Multiscale patterning of a metallic glass using sacrificial imprint lithography', Microsystems & Nanoengineering, vol. 1, no. 1.
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AbstractBulk metallic glasses (BMGs) have been developed as a means to achieve durable multiscale, nanotextured surfaces with desirable properties dictated by topography for a multitude of applications. One barrier to this achievement is the lack of a bridging technique between macroscale thermoplastic forming and nanoimprint lithography, which arises from the difficulty and cost of generating controlled nanostructures on complex geometries using conventional top-down approaches. This difficulty is compounded by the necessary destruction of any resulting reentrant structures during rigid demolding. We have developed a generalized method to overcome this limitation by sacrificial template imprinting using zinc oxide (ZnO) nanostructures. It is established that such structures can be grown inexpensively and quickly with tunable morphologies on a wide variety of substrates out of solution, which we exploit to generate the nanoscale portion of the multiscale pattern through this bottom-up approach. In this way, we achieve metallic structures that simultaneously demonstrate features from the macroscale down to the nanoscale, requiring only the top-down fabrication of macro/microstructured molds. Upon detachment of the formed part from the multiscale molds, the ZnO remains embedded in the surface and can be removed by etching in mild conditions to both regenerate the mold and render the surface of the BMGs nanoporous. The ability to pattern metallic surfaces in a single step on length scales from centimeters down to nanometers is a critical step toward fabricating devices with complex shapes that rely on multiscale topography for their intended functions, such as biomedical and electrochemical applications.
Siwakoti, YP, Blaabjerg, F & Loh, PC 2015, 'Quasi-Y-Source Boost DC–DC Converter', IEEE Transactions on Power Electronics, vol. 30, no. 12, pp. 6514-6519.
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Siwakoti, YP, Loh, PC, Blaabjerg, F, Andreasen, SJ & Town, GE 2015, 'Y-Source Boost DC/DC Converter for Distributed Generation.', IEEE Trans. Ind. Electron., vol. 62, no. 2, pp. 1059-1069.
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Siwakoti, YP, Peng, FZ, Blaabjerg, F, Loh, PC & Town, GE 2015, 'Impedance-Source Networks for Electric Power Conversion Part I: A Topological Review', IEEE Transactions on Power Electronics, vol. 30, no. 2, pp. 699-716.
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Siwakoti, YP, Peng, FZ, Blaabjerg, F, Loh, PC, Town, GE & Yang, S 2015, 'Impedance-Source Networks for Electric Power Conversion Part II: Review of Control and Modulation Techniques', IEEE Transactions on Power Electronics, vol. 30, no. 4, pp. 1887-1906.
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Sleap, SB, Turner, BD & Sloan, SW 2015, 'Kinetics of fluoride removal from spent pot liner leachate (SPLL) contaminated groundwater', Journal of Environmental Chemical Engineering, vol. 3, no. 4, pp. 2580-2587.
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Sohaib, O & Kang, K 2015, 'Individual level culture influence on online consumer iTrust aspects towards purchase intention across cultures: A S-O-R model.', Int. J. Electron. Bus., vol. 12, no. 2, pp. 142-161.
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Building trust and understanding its relationship with buyer online purchasing decisions
is important to business-to-consumer (B2C) e-commerce firms seeking to extend their
customers reach globally. Based on the Stimulus–Organism–Response (S–O–R) model,
this paper examines the moderating role of culture on the relationship between B2C web
design (web accessibility, visual appearance and social networking services) and
Interpersonal trust (iTrust), cognitive and affect-based trust that trigger online
purchasing intention. Motivation of this study includes, testing and comparing culture
(individualism and uncertainty avoidance) values as individual difference moderators in
our research model across two different societies (Australia and Pakistan). The data of
the survey were analysed using Partial Least Square (PLS) approach. The results
highlight the need to consider cultural differences when identifying the mix of ecommerce
web design strategies to employ in B2C websites, not only at the country level
but also in one culturally diverse country such as Australia.
Sojoudi, A, Saha, SC & Gu, YT 2015, 'Natural convection due to differential heating of inclined walls and heat source placed on bottom wall of an attic shaped space', Energy and Buildings, vol. 89, pp. 153-162.
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Song, R, Catchpoole, DR, Kennedy, PJ & Li, J 2015, 'Identification of lung cancer miRNA–miRNA co-regulation networks through a progressive data refining approach', Journal of Theoretical Biology, vol. 380, pp. 271-279.
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Song, R, Liu, Q, Liu, T & Li, J 2015, 'Connecting rules from paired miRNA and mRNA expression data sets of HCV patients to detect both inverse and positive regulatory relationships', BMC Genomics, vol. 16, no. S2.
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Intensive research based on the inverse expression relationship has been undertaken to discover the miRNA-mRNA regulatory modules involved in the infection of Hepatitis C virus (HCV), the leading cause of chronic
liver diseases. However, biological studies in other fields have found that inverse expression relationship is not the only regulatory relationship between miRNAs and their targets, and some miRNAs can positively regulate a mRNA by binding at the 5’ UTR of the mRNA.
Song, Y & Wen, S 2015, 'Synchronization control of stochastic memristor-based neural networks with mixed delays', Neurocomputing, vol. 156, pp. 121-128.
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Song, Y, Qin, S, Qu, J & Liu, F 2015, 'The forecasting research of early warning systems for atmospheric pollutants: A case in Yangtze River Delta region', Atmospheric Environment, vol. 118, pp. 58-69.
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Sounthararajah, DP, Loganathan, P, Kandasamy, J & Vigneswaran, S 2015, 'Adsorptive removal of heavy metals from water using sodium titanate nanofibres loaded onto GAC in fixed-bed columns', JOURNAL OF HAZARDOUS MATERIALS, vol. 287, pp. 306-316.
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Sounthararajah, DP, Loganathan, P, Kandasamy, J & Vigneswaran, S 2015, 'Effects of Humic Acid and Suspended Solids on the Removal of Heavy Metals from Water by Adsorption onto Granular Activated Carbon', INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, vol. 12, no. 9, pp. 10475-10489.
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Stewart, M & Netherton, M 2015, 'Preface', International Journal of Protective Structures, vol. 6, no. 4, pp. iii-iii.
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Stewart, MG 2015, 'Risk and economic viability of housing climate adaptation strategies for wind hazards in southeast Australia', Mitigation and Adaptation Strategies for Global Change, vol. 20, no. 4, pp. 601-622.
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A changing climate and higher wind speeds means that residential construction is likely to receive more damage in the future if design standards are maintained at the current level. The vulnerability of residential construction may be reduced by an adaptation strategy that increases design wind speeds specified by Australian standards. The paper applies break-even analysis to compare the risks, costs and benefits of climate adaptation strategies for new housing in the three largest cities in Australia: Brisbane, Sydney and Melbourne. These cities are located in southeast Australia where wind hazard is dominated by synoptic winds (thunderstorms and east-coast lows). Break-even estimates of risk reduction and adaptation cost for designing new housing to enhanced standards were calculated for three synoptic wind pattern scenarios to 2070: (1) no change, (2) B1 and (3) A1FI emission scenarios. If the actual cost of adaptation exceeds the predicted break-even value, then adaptation is not cost-effective. It was found that this adaptation strategy can lead to risk reductions of 50–80 % at a cost of approximately 1 % of house replacement value. If risk reduction is over 50 %, discount rate is 4 %, and there is no change of climate, the break-even analysis shows that adaptation is cost-effective for Sydney if the adaptation cost is less than 5–9 % of house replacement cost. Designing new housing to enhance wind classifications is also likely to be a cost-effective adaptation strategy for Brisbane and Melbourne.
Stewart, MG & Deng, X 2015, 'Climate Impact Risks and Climate Adaptation Engineering for Built Infrastructure', ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering, vol. 1, no. 1.
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A changing climate may increase the frequency or intensity of natural hazards, resulting in increased infrastructure damage. The paper will describe how risk-based approaches are well suited to optimising climate adaptation strategies related to the construction, design, operation, and maintenance of built infrastructure. Climate adaptation engineering involves estimating the risks, costs, and benefits of climate adaptation strategies and assessing at what point in time climate adaptation becomes economically viable. Stochastic methods are used to model infrastructure performance, risk reduction, and effectiveness of adaptation strategies, exposure, and costs. These concepts will be illustrated with recent research on risk-based life-cycle assessments of climate adaptation strategies for Australian housing subject to extreme wind events. This will pave the way for more efficient and resilient infrastructure, and help future proof new and existing infrastructure to a changing climate.
Stewart, MG & Deng, X 2015, 'Closure to “Climate Impact Risks and Climate Adaptation Engineering for Built Infrastructure” by Mark G. Stewart and Xiaoli Deng', ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering, vol. 1, no. 2.
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Stewart, MG & Mueller, J 2015, 'Responsible policy analysis in aviation security with an evaluation of PreCheck', Journal of Air Transport Management, vol. 48, pp. 13-22.
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Officials serving the public are tasked at the most fundamental level to spend funds in a manner that most effectively and efficiently keeps people safe. To do otherwise is irresponsible. In the case of counterterrorism policy-making, it is important, then, to evaluate the degree to which any gains in security afforded by counterterrorism measures are great enough to justify their cost. Risk analysis is an aid to responsible decisionmaking that does exactly that. We deal with four elements central to this approach-the cost per saved life, acceptable risk, cost-benefit analysis, and risk communication-and we discuss the degree to which risk analysis has been applied within the government to evaluate counterterrorism measures. We summarize our findings when this approach is used to assess the cost-effectiveness of airline and airport security measures, and then conclude by applying it to PreCheck, a measure that seems likely to bring considerable efficiencies to the screening process and great benefits to passengers, airports, and airlines while actually enhancing security somewhat.
Stewart, MG & Netherton, MD 2015, 'Reliability-Based Design Load Factors for Explosive Blast Loading', Journal of Performance of Constructed Facilities, vol. 29, no. 5.
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Reliability-based design allows the decision maker to select the level of reliability for a specific blast loading scenario and key to this is an understanding of airblast uncertainty. Hence, explosive field trials have been conducted in Australia that measured the variability of free-field blast loading caused by military standard plastic explosives. The results have revealed a high level of variability of peak incident pressure, impulse, and time of positive phase duration for repeatable tests where variability would be expected to be a minimum. The accuracy of predictive blast load models (model error) was also assessed. A probabilistic blast load computer model is revised to capture these observed variabilities. The effect of a 20% mass-increase safety factor typically applied to explosive mass on the probability of exceeding a design blast load is assessed. Reliability-based load factors are calculated where the nominal load is multiplied by the load factor to ensure that the actual load is equal to the reliability level. Reliability-based load factors are estimated for reliability levels of 0.05-0.99, for a range of scaled distances for military munitions. The load factor can be as low as 0.66 for a 0.05 reliability level and as high as 1.30 for a 0.99 reliability level.
Storrs, MJ, Alexander, H, Sun, J, Kroon, J & Evans, JL 2015, 'Measuring Team‐Based Interprofessional Education Outcomes in Clinical Dentistry: Psychometric Evaluation of a New Scale at an Australian Dental School', Journal of Dental Education, vol. 79, no. 3, pp. 249-258.
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Previous research on interprofessional education (IPE) assessment has shown the need to evaluate the influence of team‐based processes on the quality of clinical education. This study aimed to develop a valid and reliable instrument to evaluate the effectiveness of interprofessional team‐based treatment planning (TBTP) on the quality of clinical education at the Griffith University School of Dentistry and Oral Health, Queensland, Australia. A scale was developed and evaluated to measure interprofessional student team processes and their effect on the quality of clinical education for dental, oral health therapy, and dental technology students (known more frequently as intraprofessional education). A face validity analysis by IPE experts confirmed that items on the scale reflected the meaning of relevant concepts. After piloting, 158 students (61% response rate) involved with TBTP participated in a survey. An exploratory factor analysis using the principal component method retained 23 items with a total variance of 64.6%, suggesting high content validity. Three subscales accounted for 45.7%, 11.4%, and 7.5% of the variance. Internal consistency of the scale (α=0.943) and subscales 1 (α=0.953), 2 (α=0.897), and 3 (α=0.813) was high. A reliability analysis yielded moderate (rs=0.43) to high correlations (0.81) with the remaining scale items. Confirmatory factor analyses verified convergent validity and confirmed that this structure had a good model fit. This study suggests that the instrument might be useful in evaluating interprofessional or intraprofessional team‐based processes and their influence on the quality of clinical education in academic dental institutions.
Su, S, Huang, Z, NuLi, Y, Tuerxun, F, Yang, J & Wang, J 2015, 'A novel rechargeable battery with a magnesium anode, a titanium dioxide cathode, and a magnesium borohydride/tetraglyme electrolyte', Chemical Communications, vol. 51, no. 13, pp. 2641-2644.
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Commercial TiO2 in a compatible electrolyte of 0.5 mol L−1 Mg(BH4)2/LiBH4/TG ([LiBH4] = 1.5 mol L−1) delivers high specific capacity, and excellent cycling stability and rate capability. This work opens up a new alternative for the development of rechargeable magnesium batteries.
Su, SW, Savkin, AV, Guo, Y, Celler, BG & Nguyen, HT 2015, 'Decentralized Integral Controllability Analysis Based on a New Unconditional Stability Criterion', IEEE TRANSACTIONS ON AUTOMATIC CONTROL, vol. 60, no. 1, pp. 211-215.
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Decentralized integral control is one of the most popular control strategies used in practice. An important issue associated with this strategy is the analysis of Decentralized Integral Controllability (DIC). Campo and Morari showed that for a given process, if its steady state gain matrix is not critically D-stable, its DIC can be determined by using its steady state gain matrix. This technical note investigates decentralized integral control with a special focus on the DIC analysis of processes whose steady state gain matrices are critically D-stable. First, we introduce a new unconditional stability criterion. Then, by using the proposed criterion, it is proved that for up to four-channel processes, their DIC can be totally determined by their steady state gain matrices. We also present a multi-loop PI control design method, which provides an explicit lower bound of the proportional coefficient to achieve decentralized unconditional stability for low dimensional processes. For higher dimensional processes, this technical note presents a six-channel process whose DIC property cannot be determined only by its steady state gain matrix, contradicting the view of some other researchers.
Sui, Y, Zhao, X, Zhang, S, Yu, X, Zhao, S & Zhang, L 2015, 'Self-expressive tracking', Pattern Recognition, vol. 48, no. 9, pp. 2872-2884.
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Sui, Y, Zheng, P, Tong, C, Yu, B, Zhu, S & Zhu, J 2015, 'Investigation of a tubular dual-stator flux-switching permanent-magnet linear generator for free-piston energy converter', Journal of Applied Physics, vol. 117, no. 17, pp. 17B519-17B519.
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This paper describes a tubular dual-stator flux-switching permanent-magnet (PM) linear generator for free-piston energy converter. The operating principle, topology, and design considerations of the machine are investigated. Combining the motion characteristic of free-piston Stirling engine, a tubular dual-stator PM linear generator is designed by finite element method. Some major structural parameters, such as the outer and inner radii of the mover, PM thickness, mover tooth width, tooth width of the outer and inner stators, etc., are optimized to improve the machine performances like thrust capability and power density. In comparison with conventional single-stator PM machines like moving-magnet linear machine and flux-switching linear machine, the proposed dual-stator flux-switching PM machine shows advantages in higher mass power density, higher volume power density, and lighter mover.
Sun, G, Fang, J, Tian, X, Li, G & Li, Q 2015, 'Discrete robust optimization algorithm based on Taguchi method for structural crashworthiness design', Expert Systems with Applications, vol. 42, no. 9, pp. 4482-4492.
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Sun, G, Tian, X, Fang, J, Xu, F, Li, G & Huang, X 2015, 'Dynamical bending analysis and optimization design for functionally graded thickness (FGT) tube', International Journal of Impact Engineering, vol. 78, pp. 128-137.
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Sun, J & Buys, N 2015, 'Community-Based Mind–Body Meditative Tai Chi Program and Its Effects on Improvement of Blood Pressure, Weight, Renal Function, Serum Lipoprotein, and Quality of Life in Chinese Adults With Hypertension', The American Journal of Cardiology, vol. 116, no. 7, pp. 1076-1081.
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Sun, J & Buys, N 2015, 'Effects of probiotics consumption on lowering lipids and CVD risk factors: A systematic review and meta-analysis of randomized controlled trials', Annals of Medicine, vol. 47, no. 6, pp. 430-440.
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Sun, J, Hu, S, Sharma, KR, Ni, B-J & Yuan, Z 2015, 'Degradation of methanethiol in anaerobic sewers and its correlation with methanogenic activities', Water Research, vol. 69, pp. 80-89.
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Sun, J, Li, Z, Buys, N & Storch, EA 2015, 'Correlates of comorbid depression, anxiety and helplessness with obsessive–compulsive disorder in Chinese adolescents', Journal of Affective Disorders, vol. 174, pp. 31-37.
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Sun, W-J, Wei, Z-F, Sun, D-A, Liu, S-Q, Fatahi, B & Wang, X-Q 2015, 'Evaluation of the swelling characteristics of bentonite–sand mixtures', Engineering Geology, vol. 199, pp. 1-11.
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Sun, Y, Bell, JL, Carter, D, Gherardi, S, Poulos, RC, Milazzo, G, Wong, JWH, Al-Awar, R, Tee, AE, Liu, PY, Liu, B, Atmadibrata, B, Wong, M, Trahair, T, Zhao, Q, Shohet, JM, Haupt, Y, Schulte, JH, Brown, PJ, Arrowsmith, CH, Vedadi, M, MacKenzie, KL, Hüttelmaier, S, Perini, G, Marshall, GM, Braithwaite, A & Liu, T 2015, 'WDR5 Supports an N-Myc Transcriptional Complex That Drives a Protumorigenic Gene Expression Signature in Neuroblastoma', Cancer Research, vol. 75, no. 23, pp. 5143-5154.
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Abstract
MYCN gene amplification in neuroblastoma drives a gene expression program that correlates strongly with aggressive disease. Mechanistically, trimethylation of histone H3 lysine 4 (H3K4) at target gene promoters is a strict prerequisite for this transcriptional program to be enacted. WDR5 is a histone H3K4 presenter that has been found to have an essential role in H3K4 trimethylation. For this reason, in this study, we investigated the relationship between WDR5-mediated H3K4 trimethylation and N-Myc transcriptional programs in neuroblastoma cells. N-Myc upregulated WDR5 expression in neuroblastoma cells. Gene expression analysis revealed that WDR5 target genes included those with MYC-binding elements at promoters such as MDM2. We showed that WDR5 could form a protein complex at the MDM2 promoter with N-Myc, but not p53, leading to histone H3K4 trimethylation and activation of MDM2 transcription. RNAi-mediated attenuation of WDR5 upregulated expression of wild-type but not mutant p53, an effect associated with growth inhibition and apoptosis. Similarly, a small-molecule antagonist of WDR5 reduced N-Myc/WDR5 complex formation, N-Myc target gene expression, and cell growth in neuroblastoma cells. In MYCN-transgenic mice, WDR5 was overexpressed in precancerous ganglion and neuroblastoma cells compared with normal ganglion cells. Clinically, elevated levels of WDR5 in neuroblastoma specimens were an independent predictor of poor overall survival. Overall, our results identify WDR5 as a key cofactor for N-Myc–regulated transcriptional activation and tumorigenesis and as a novel therapeutic target for MYCN-amplified neuroblastomas. Cancer Res; 75(23); 5143–54. ©2015 AACR.
Sun, Y, Zhao, L, Huang, S, Yan, L & Dissanayake, G 2015, 'Line matching based on planar homography for stereo aerial images', ISPRS Journal of Photogrammetry and Remote Sensing, vol. 104, pp. 1-17.
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Suñer, S, Joffe, R, Tipper, JL & Emami, N 2015, 'Ultra high molecular weight polyethylene/graphene oxide nanocomposites: Thermal, mechanical and wettability characterisation', Composites Part B: Engineering, vol. 78, pp. 185-191.
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Surawski, NC, Sullivan, AL, Meyer, CP, Roxburgh, SH & Polglase, PJ 2015, 'Greenhouse gas emissions from laboratory-scale fires in wildland fuels depend on fire spread mode and phase of combustion', ATMOSPHERIC CHEMISTRY AND PHYSICS, vol. 15, no. 9, pp. 5259-5273.
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Sutter, D, Tomamichel, M & Harrow, AW 2015, 'Strengthened Monotonicity of Relative Entropy via Pinched Petz Recovery Map', IEEE Transactions on Information Theory, vol. 62, no. 5, pages 2907-2913, 2016, vol. 62, no. 5, pp. 2907-2913.
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The quantum relative entropy between two states satisfies a monotonicity
property meaning that applying the same quantum channel to both states can
never increase their relative entropy. It is known that this inequality is only
tight when there is a 'recovery map' that exactly reverses the effects of the
quantum channel on both states. In this paper we strengthen this inequality by
showing that the difference of relative entropies is bounded below by the
measured relative entropy between the first state and a recovered state from
its processed version. The recovery map is a convex combination of rotated Petz
recovery maps and perfectly reverses the quantum channel on the second state.
As a special case we reproduce recent lower bounds on the conditional mutual
information such as the one proved in [Fawzi and Renner, Commun. Math. Phys.,
2015]. Our proof only relies on elementary properties of pinching maps and the
operator logarithm.
Tabatabaiefar, HR, Fatahi, B, Ghabraie, K & Zhou, W-H 2015, 'Evaluation of numerical procedures to determine seismic response of structures under influence of soil-structure interaction', Structural Engineering and Mechanics, vol. 56, no. 1, pp. 27-47.
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Copyright © 2015 Techno-Press, Ltd. In this study, the accuracy and reliability of fully nonlinear method against equivalent linear method for dynamic analysis of soil-structure interaction is investigated comparing the predicted results of both numerical procedures with the results of experimental shaking table tests. An enhanced numerical soil-structure model has been developed which treats the behaviour of the soil and the structure with equal rigour. The soil-structural model comprises a 15 storey structural model resting on a soft soil inside a laminar soil container. The structural model was analysed under three different conditions: (i) fixed base model performing conventional time history dynamic analysis, (ii) flexible base model (considering full soil-structure interaction) conducting equivalent linear dynamic analysis, and (iii) flexible base model performing fully nonlinear dynamic analysis. The results of the above mentioned three cases in terms of lateral storey deflections and inter-storey drifts are determined and compared with the experimental results of shaking table tests. Comparing the experimental results with the numerical analysis predictions, it is noted that equivalent linear method of dynamic analysis underestimates the inelastic seismic response of mid-rise moment resisting building frames resting on soft soils in comparison to the fully nonlinear dynamic analysis method. Thus, inelastic design procedure, using equivalent linear method, cannot adequately guarantee the structural safety for mid-rise building frames resting on soft soils. However, results obtained from the fully nonlinear method of analysis fit the experimental results reasonably well. Therefore, this method is recommended to be used by practicing engineers.
Tahan Latibari, S, Mehrali, M, Mehrali, M, Afifi, ABM, Mahlia, TMI, Akhiani, AR & Metselaar, HSC 2015, 'Facile synthesis and thermal performances of stearic acid/titania core/shell nanocapsules by sol–gel method', Energy, vol. 85, pp. 635-644.
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Tahan Latibari, S, Mehrali, M, Mehrali, M, Mahlia, TMI & Metselaar, HSC 2015, 'Fabrication and Performances of Microencapsulated Palmitic Acid with Enhanced Thermal Properties', Energy & Fuels, vol. 29, no. 2, pp. 1010-1018.
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Talatahari, S, Gandomi, AH, Yang, X-S & Deb, S 2015, 'Optimum design of frame structures using the Eagle Strategy with Differential Evolution', Engineering Structures, vol. 91, pp. 16-25.
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Tan, M, Tsang, IW & Wang, L 2015, 'Matching Pursuit LASSO Part I: Sparse Recovery Over Big Dictionary', IEEE Transactions on Signal Processing, vol. 63, no. 3, pp. 727-741.
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Tan, M, Tsang, IW & Wang, L 2015, 'Matching Pursuit LASSO Part II: Applications and Sparse Recovery Over Batch Signals', IEEE Transactions on Signal Processing, vol. 63, no. 3, pp. 742-753.
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Tan, S, Fu, Q, Scofield, JMP, Kim, J, Gurr, PA, Ladewig, K, Blencowe, A & Qiao, GG 2015, 'Cyclodextrin-based supramolecular polymeric nanoparticles for next generation gas separation membranes', Journal of Materials Chemistry A, vol. 3, no. 28, pp. 14876-14886.
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Cyclodextrin-based supramolecular polyrotaxanes are for the first time used as soft nanoparticle additives for the selective layer of composite membranes. They exhibit outstanding gas transport characteristics at low additive percentages, due to the dynamic nature of the PDMS side chains.
Tan, S, Nam, E, Cui, J, Xu, C, Fu, Q, Ren, JM, Wong, EHH, Ladewig, K, Caruso, F, Blencowe, A & Qiao, GG 2015, 'Fabrication of ultra-thin polyrotaxane-based films via solid-state continuous assembly of polymers', Chemical Communications, vol. 51, no. 11, pp. 2025-2028.
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Surface-confined ultra-thin polyrotaxane (PRX)-based films with tunable composition, surface topology and swelling characteristics were prepared by solid-state continuous assembly of polymers (ssCAP).
Tan, Z, Jamdagni, A, He, X, Nanda, P, Liu, RP & Hu, J 2015, 'Detection of Denial-of-Service Attacks Based on Computer Vision Techniques', IEEE Transactions on Computers, vol. 64, no. 9, pp. 2519-2533.
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Tangaramvong, S, Wu, D & Gao, W 2015, 'Interval Limit Analysis of Rigid Perfectly Plastic Structures', Journal of Engineering Mechanics, vol. 141, no. 1, pp. 06014016-06014016.
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This article presents a novel extended limit analysis approach that determines the sharp maximum and minimum bounds on the collapse load of rigid perfectly plastic structures simultaneously subject to uncertain but bounded loading magnitudes and plastic material capacities. The governing formulation is cast as a linear programming problem with interval coefficients. Linearity is achieved by a suitable piecewise linearization of nonlinear yield surfaces. The proposed algorithm is founded on a characteristic formula concept and an appropriate interval arithmetic interpretation to transform the interval limit analysis problem into two deterministic linear programming problems that can be solved by any available linear programming solver.
Tangaramvong, S, Wu, D, Gao, W & Tin-Loi, F 2015, 'Response Bounds of Elastic Structures in the Presence of Interval Uncertainties', Journal of Structural Engineering, vol. 141, no. 12, pp. 04015046-04015046.
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© 2015 American Society of Civil Engineers. A mathematical-programming (MP)-based approach is proposed to directly determine the two extreme [(1) minimum, and (2) maximum] bounds of some static response quantity for elastic structures subject to the simultaneous application of interval applied forces and interval elastic material properties. Such a direct determination scheme reformulates the interval finite-element (FE) analysis into a pair of standard nonlinear programming (NLP) problems that can be solved by any available NLP code. Not only does the proposed method advantageously bypass any computationally expensive combinatorial searches to capture the response limits, but it can also directly accommodate any dependency in the interval data. Some examples are presented to illustrate the robustness and efficiency of the method.
Tasalloti, SMA, Indraratna, B, Rujikiatkamjorn, C, Heitor, A & Chiaro, G 2015, 'A Laboratory Study on the Shear Behavior of Mixtures of Coal Wash and Steel Furnace Slag as Potential Structural Fill', Geotechnical Testing Journal, vol. 38, no. 4, pp. 20140047-20140047.
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Tehrany, MS, Pradhan, B & Jebur, MN 2015, 'Flood susceptibility analysis and its verification using a novel ensemble support vector machine and frequency ratio method', Stochastic Environmental Research and Risk Assessment, vol. 29, no. 4, pp. 1149-1165.
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Tehrany, MS, Pradhan, B, Mansor, S & Ahmad, N 2015, 'Flood susceptibility assessment using GIS-based support vector machine model with different kernel types', CATENA, vol. 125, pp. 91-101.
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Teng, QF, Bai, JY, Zhu, JG & Guo, YG 2015, 'Sensorless model predictive torque control using sliding-mode model reference adaptive system observer for permanent magnet synchronous motor drive systems', Kongzhi Lilun Yu Yingyong/Control Theory and Applications, vol. 32, no. 2, pp. 150-161.
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A novel sensorless model predictive torque control (MPTC) strategy is proposed for the three-phase permanent magnet synchronous motor (PMSM) drive system with sliding-mode model reference adaptive system (MRAS) observer. Making use of techniques of MRAS and sliding-mode, we design a sliding-mode MRAS observer to improve the estimated speed accuracy and enhance the system robustness. In order to reduce the torque and flux ripples and improve the control performance, we employ the MPTC strategy in the approach. Numerical simulation validates the feasibility and effectiveness of the proposed scheme. In comparison with the sensorless MPTC involving MRAS observer, the proposed MPTC with sliding-model MRAS observer provides stronger robustness and achieves satisfactory torque and speed control. Meanwhile, comparing to the sensorless direct torque control (DTC) and sensorless field-oriented control (FOC), we find the proposed sensorless MPTC reduces the average inverter switching frequency and decreases the total harmonic distortion (THD) of the phase current, and thus improves the industrial reliability.
Tennakoon, N, Indraratna, B, Nimbalkar, S & Sloan, SW 2015, 'Application of bounding surface plasticity concept for clay-fouled ballast under drained loading', Computers and Geotechnics, vol. 70, pp. 96-105.
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Thakur, CS, Hamilton, TJ, Wang, R, Tapson, J & Schaik, AV 2015, 'A neuromorphic hardware framework based on population coding', Proceedings of the International Joint Conference on Neural Networks, vol. 2015-September.
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In the biological nervous system, large neuronal populations work
collaboratively to encode sensory stimuli. These neuronal populations are
characterised by a diverse distribution of tuning curves, ensuring that the
entire range of input stimuli is encoded. Based on these principles, we have
designed a neuromorphic system called a Trainable Analogue Block (TAB), which
encodes given input stimuli using a large population of neurons with a
heterogeneous tuning curve profile. Heterogeneity of tuning curves is achieved
using random device mismatches in VLSI (Very Large Scale Integration) process
and by adding a systematic offset to each hidden neuron. Here, we present
measurement results of a single test cell fabricated in a 65nm technology to
verify the TAB framework. We have mimicked a large population of neurons by
re-using measurement results from the test cell by varying offset. We thus
demonstrate the learning capability of the system for various regression tasks.
The TAB system may pave the way to improve the design of analogue circuits for
commercial applications, by rendering circuits insensitive to random mismatch
that arises due to the manufacturing process.
Thakur, CS, Wang, RM, Afshar, S, Hamilton, TJ, Tapson, JC, Shamma, SA & van Schaik, A 2015, 'Sound stream segregation: a neuromorphic approach to solve the “cocktail party problem” in real-time', Frontiers in Neuroscience, vol. 9, no. SEP.
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© 2015 Thakur, Wang, Afshar, Hamilton, Tapson, Shamma and van Schaik. The human auditory system has the ability to segregate complex auditory scenes into a foreground component and a background, allowing us to listen to specific speech sounds from a mixture of sounds. Selective attention plays a crucial role in this process, colloquially known as the "cocktail party effect." It has not been possible to build a machine that can emulate this human ability in real-time. Here, we have developed a framework for the implementation of a neuromorphic sound segregation algorithm in a Field Programmable Gate Array (FPGA). This algorithm is based on the principles of temporal coherence and uses an attention signal to separate a target sound stream from background noise. Temporal coherence implies that auditory features belonging to the same sound source are coherently modulated and evoke highly correlated neural response patterns. The basis for this form of sound segregation is that responses from pairs of channels that are strongly positively correlated belong to the same stream, while channels that are uncorrelated or anti-correlated belong to different streams. In our framework, we have used a neuromorphic cochlea as a frontend sound analyser to extract spatial information of the sound input, which then passes through band pass filters that extract the sound envelope at various modulation rates. Further stages include feature extraction and mask generation, which is finally used to reconstruct the targeted sound. Using sample tonal and speech mixtures, we show that our FPGA architecture is able to segregate sound sources in real-time. The accuracy of segregation is indicated by the high signal-to-noise ratio (SNR) of the segregated stream (90, 77, and 55 dB for simple tone, complex tone, and speech, respectively) as compared to the SNR of the mixture waveform (0 dB). This system may be easily extended for the segregation of complex speech signals, and may thus find vario...
Thakur, IS, Pandey, A & Ngo, HH 2015, 'Preface', Indian Journal of Experimental Biology, vol. 53, no. 6, p. 315.
Thankappan, R, Nguyen, TV, Srinivasan, SV, Vigneswaran, S, Kandasamy, J & Loganathan, P 2015, 'Removal of leather tanning agent syntan from aqueous solution using Fenton oxidation followed by GAC adsorption', JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, vol. 21, pp. 483-488.
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That, ND & Ha, QP 2015, 'Discrete‐time sliding mode control with state bounding for linear systems with time‐varying delay and unmatched disturbances', IET Control Theory & Applications, vol. 9, no. 11, pp. 1700-1708.
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Thollander, P, Paramonova, S, Cornelis, E, Kimura, O, Trianni, A, Karlsson, M, Cagno, E, Morales, I & Jiménez Navarro, JP 2015, 'International study on energy end-use data among industrial SMEs (small and medium-sized enterprises) and energy end-use efficiency improvement opportunities', Journal of Cleaner Production, vol. 104, pp. 282-296.
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Thomas, PS, Heide, K & Földvari, M 2015, 'Water and hydrogen release from perlites and opal', Journal of Thermal Analysis and Calorimetry, vol. 120, no. 1, pp. 95-101.
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© 2014 Akadémiai Kiadó, Budapest, Hungary The dehydration of two specimens of perlite from Pálháza (Hungary) and from Borovitza (Bulgaria) along with a specimen of Australian precious opal has been investigated by temperature controlled high-vacuum degassing experiments (DEGAS). Dehydration results in the loss of water over a wide range of temperatures due to the presence of both molecular and bound (silanol, Si–OH) water. A surprising observation is that hydrogen (H2) is also released. The hydrogen is observed to be released from both perlites and opal and both by diffusional processes and through the sudden explosive, bursting of inclusions which produce sharp spikes in the MS data. The origin of the hydrogen cannot be explained by a simple statistical distribution of the silanol species in the vitreous matrix; rather, it is more likely to be associated with an inverse-micellar decomposition of silanol species. Alternate sources of hydrogen such as meteoric waters or specific genetic origins based on the perlite or opal location and formation are discounted as the hydrogen release is found to be independent of CO2 and SO2 evolution.
Tian, L, Gao, Y, Fang, J & An, X 2015, 'Multi-objective optimisation of hybrid S-shaped rails under oblique impact loading', International Journal of Heavy Vehicle Systems, vol. 22, no. 2, pp. 137-137.
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Tianqing Zhu, Ping Xiong, Gang Li & Wanlei Zhou 2015, 'Correlated Differential Privacy: Hiding Information in Non-IID Data Set', IEEE Transactions on Information Forensics and Security, vol. 10, no. 2, pp. 229-242.
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Privacy preserving on data mining and data release has attracted an increasing research interest over a number of decades. Differential privacy is one influential privacy notion that offers a rigorous and provable privacy guarantee for data mining and data release. Existing studies on differential privacy assume that in a data set, records are sampled independently. However, in real-world applications, records in a data set are rarely independent. The relationships among records are referred to as correlated information and the data set is defined as correlated data set. A differential privacy technique performed on a correlated data set will disclose more information than expected, and this is a serious privacy violation. Although recent research was concerned with this new privacy violation, it still calls for a solid solution for the correlated data set. Moreover, how to decrease the large amount of noise incurred via differential privacy in correlated data set is yet to be explored. To fill the gap, this paper proposes an effective correlated differential privacy solution by defining the correlated sensitivity and designing a correlated data releasing mechanism. With consideration of the correlated levels between records, the proposed correlated sensitivity can significantly decrease the noise compared with traditional global sensitivity. The correlated data releasing mechanism correlated iteration mechanism is designed based on an iterative method to answer a large number of queries. Compared with the traditional method, the proposed correlated differential privacy solution enhances the privacy guarantee for a correlated data set with less accuracy cost. Experimental results show that the proposed solution outperforms traditional differential privacy in terms of mean square error on large group of queries. This also suggests the correlated differential privacy can successfully retain the utility while preserving the privacy.
Tien Bui, D, Tran, CT, Pradhan, B, Revhaug, I & Seidu, R 2015, 'iGeoTrans – a novel iOS application for GPS positioning in geosciences', Geocarto International, vol. 30, no. 2, pp. 1-16.
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Tijing, LD, Woo, YC, Choi, J-S, Lee, S, Kim, S-H & Shon, HK 2015, 'Fouling and its control in membrane distillation-A review', JOURNAL OF MEMBRANE SCIENCE, vol. 475, pp. 215-244.
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Membrane distillation (MD) is an emerging thermally-driven technology that poses a lot of promise in desalination, and water and wastewater treatment. Developments in membrane design and the use of alternative energy sources have provided much improvement in the viability of MD for different applications. However, fouling of membranes is still one of the major issues that hounds the long-term stability performance of MD. Membrane fouling is the accumulation of unwanted materials on the surface or inside the pores of a membrane that results to a detrimental effect on the overall performance of MD. If not addressed appropriately, it could lead to membrane damage, early membrane replacement or even shutdown of operation. Similar with other membrane separation processes, fouling of MD is still an unresolved problem. Due to differences in membrane structure and design, and operational conditions, the fouling formation mechanism in MD may be different from those of pressure-driven membrane processes. In order to properly address the problem of fouling, there is a need to understand the fouling formation and mechanism happening specifically for MD. This review details the different foulants and fouling mechanisms in the MD process, their possible mitigation and control techniques, and characterization strategies that can be of help in understanding and minimizing the fouling problem
Tomamichel, M & Hayashi, M 2015, 'Operational Interpretation of Renyi Information Measures via Composite Hypothesis Testing Against Product and Markov Distributions', IEEE Transactions on Information Theory, vol. 64, no. 2, pp. 1064-1082.
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We revisit the problem of asymmetric binary hypothesis testing against a
composite alternative hypothesis. We introduce a general framework to treat
such problems when the alternative hypothesis adheres to certain axioms. In
this case we find the threshold rate, the optimal error and strong converse
exponents (at large deviations from the threshold) and the second order
asymptotics (at small deviations from the threshold). We apply our results to
find operational interpretations of various Renyi information measures. In case
the alternative hypothesis is comprised of bipartite product distributions, we
find that the optimal error and strong converse exponents are determined by
variations of Renyi mutual information. In case the alternative hypothesis
consists of tripartite distributions satisfying the Markov property, we find
that the optimal exponents are determined by variations of Renyi conditional
mutual information. In either case the relevant notion of Renyi mutual
information depends on the precise choice of the alternative hypothesis. As
such, our work also strengthens the view that different definitions of Renyi
mutual information, conditional entropy and conditional mutual information are
adequate depending on the context in which the measures are used.
Tomamichel, M & Leverrier, A 2015, 'A largely self-contained and complete security proof for quantum key distribution', Quantum, vol. 1, pp. 14-52.
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In this work we present a security analysis for quantum key distribution,
establishing a rigorous tradeoff between various protocol and security
parameters for a class of entanglement-based and prepare-and-measure protocols.
The goal of this paper is twofold: 1) to review and clarify the
state-of-the-art security analysis based on entropic uncertainty relations, and
2) to provide an accessible resource for researchers interested in a security
analysis of quantum cryptographic protocols that takes into account finite
resource effects. For this purpose we collect and clarify several arguments
spread in the literature on the subject with the goal of making this treatment
largely self-contained.
More precisely, we focus on a class of prepare-and-measure protocols based on
the Bennett-Brassard (BB84) protocol as well as a class of entanglement-based
protocols similar to the Bennett-Brassard-Mermin (BBM92) protocol. We carefully
formalize the different steps in these protocols, including randomization,
measurement, parameter estimation, error correction and privacy amplification,
allowing us to be mathematically precise throughout the security analysis. We
start from an operational definition of what it means for a quantum key
distribution protocol to be secure and derive simple conditions that serve as
sufficient condition for secrecy and correctness. We then derive and eventually
discuss tradeoff relations between the block length of the classical
computation, the noise tolerance, the secret key length and the security
parameters for our protocols. Our results significantly improve upon previously
reported tradeoffs.
Tomamichel, M, Berta, M & Renes, JM 2015, 'Quantum Coding with Finite Resources', Nature Communications 7:11419 (2016), vol. 7.
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The quantum capacity of a memoryless channel is often used as a single figure
of merit to characterize its ability to transmit quantum information
coherently. The capacity determines the maximal rate at which we can code
reliably over asymptotically many uses of the channel. We argue that this
asymptotic treatment is insufficient to the point of being irrelevant in the
quantum setting where decoherence severely limits our ability to manipulate
large quantum systems in the encoder and decoder. For all practical purposes we
should instead focus on the trade-off between three parameters: the rate of the
code, the number of coherent uses of the channel, and the fidelity of the
transmission. The aim is then to specify the region determined by allowed
combinations of these parameters. Towards this goal, we find approximate and
exact characterizations of the region of allowed triplets for the qubit
dephasing channel and for the erasure channel with classical post-processing
assistance. In each case the region is parametrized by a second channel
parameter, the quantum channel dispersion. In the process we also develop
several general inner (achievable) and outer (converse) bounds on the coding
region that are valid for all finite-dimensional quantum channels and can be
computed efficiently. Applied to the depolarizing channel, this allows us to
determine a lower bound on the number of coherent uses of the channel necessary
to witness super-additivity of the coherent information.
Tomc, E & Vassallo, AM 2015, 'Community renewable energy networks in urban contexts: The need for a holistic approach', International Journal of Sustainable Energy Planning and Management, vol. 8, pp. 31-42.
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Despite a ubiquitous interest in community energy, a review of the literature reveals a fragmented approach in which the technology elements that need to be considered for the effective existence of CREN are well understood but the social aspects have not yet been addressed to the same degree. Thus, while technology is no longer the limiting factor it used to be and there are mechanisms that can be used to deal with the social requirements, the fragmentation remains a challenge. The next necessary step in the exploration of community renewable energy lies in crafting a holistic approach that brings it all together to foster successful implementations. The aim of this paper is to define an urban CREN within this holistic outlook and review the literature that refers to the different aspects that need to be considered for project success in a greenfield setting. In conclusion, the authors suggest the reconceptualisation of CREN as an organisation to create a business model in which the technology and social aspects are approached in a transdisciplinary manner to achieve the effective creation and ongoing operation of such networks.
Tomc, E & Vassallo, AM 2015, 'Community Renewable Energy Networks in urban contexts: the need for a holistic approach', International Journal of Sustainable Energy Planning and Management, vol. 8, pp. 31-42.
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Despite a ubiquitous interest in community energy, a review of the literature reveals a fragmented approach in which the technology elements that need to be considered for the effective existence of CREN are well understood but the social aspects have not yet been addressed to the same degree. Thus, while technology is no longer the limiting factor it used to be and there are mechanisms that can be used to deal with the social requirements, the fragmentation remains a challenge. The next necessary step in the exploration of community renewable energy lies in crafting a holistic approach that brings it all together to foster successful implementations. The aim of this paper is to define an urban CREN within this holistic outlook and review the literature that refers to the different aspects that need to be considered for project success in a greenfield setting. In conclusion, the authors suggest the reconceptualisation of CREN as an organisation to create a business model in which the technology and social aspects are approached in a transdisciplinary manner to achieve the effective creation and ongoing operation of such networks
Torrejos, REC, Nisola, GM, Park, MJ, Beltran, AB, Seo, JG, Lee, S-P & Chung, W-J 2015, 'Liquid–liquid extraction of Li+using mixed ion carrier system at room temperature ionic liquid', Desalination and Water Treatment, vol. 53, no. 10, pp. 2774-2781.
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An environmentally benign technique for the separation and recovery of lithium (Li+) from aqueous streams, containing mixed metal ions was developed via liquid–liquid extraction (LLE). Hydrophobic room temperature ionic liquids (RTIL) were tested as the main extracting solvents. To increase the metal extraction, a proton-ionizable agent bis(2-ethylhexyl) phosphoric acid (DEHPA) was added into the RTIL. To enhance the metal uptake selectivity, three Li+-selective neutral ion carriers such as 6-hydroxy-dibenzo-14-crown-4, dibenzo-14-crown-4, and tri-n-octyl-phosphine (TOPO) were also used and tested as extractant additives. Among the tested RTILs, phosphonium-based CYPHOS IL 109 was the most stable extractant as it exhibited the lowest loss when contacted with water. Addition of proton-ionizable agent DEHPA in CYPHOS IL 109 afforded a high extraction of multivalent cations with negligible recovery of monovalent metals. On the other hand, the addition of neutral ion carrier TOPO in DEHPA/CYPHOS IL 109 extractant resulted in a selective Li+ uptake which was maximized when the pH of the aqueous solution was maintained at 13, with TOPO/DEHPA molar ratio = 8. The overall process could be a two-stage LLE system wherein the unwanted multivalent cations are initially removed using DEHPA/CYPHOS IL 109 followed by the selective extraction of Li+, using TOPO/DEHPA/CYPHOS IL 109 system.
Torrejos, REC, Nisola, GM, Park, MJ, Shon, HK, Seo, JG, Koo, S & Chung, W-J 2015, 'Synthesis and characterization of multi-walled carbon nanotubes-supported dibenzo-14-crown-4 ether with proton ionizable carboxyl sidearm as Li+ adsorbents', Chemical Engineering Journal, vol. 264, pp. 89-98.
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Tran, NH, Gin, KY-H & Ngo, HH 2015, 'Fecal pollution source tracking toolbox for identification, evaluation and characterization of fecal contamination in receiving urban surface waters and groundwater', Science of The Total Environment, vol. 538, pp. 38-57.
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Tran, NH, Ngo, HH, Urase, T & Gin, KY-H 2015, 'A critical review on characterization strategies of organic matter for wastewater and water treatment processes', Bioresource Technology, vol. 193, pp. 523-533.
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Tran, T & Ha, QP 2015, 'Dependable control systems with Internet of Things', ISA Transactions, vol. 59, pp. 303-313.
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Tran, TS, Center, JR, Seibel, MJ, Eisman, JA, Kushnir, MM, Rockwood, AL & Nguyen, TV 2015, 'Relationship between Serum Testosterone and Fracture Risk in Men: A Comparison of RIA and LC-MS/MS', Clinical Chemistry, vol. 61, no. 9, pp. 1182-1190.
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Abstract
BACKGROUND
Serum testosterone can be measured by LC-MS/MS and RIA. We investigated whether the testosterone–fracture relationship was affected by the method of measurement.
METHODS
We measured total testosterone (TT) by LC-MS/MS (TTLC-MS/MS) and RIA (TTRIA) in serum samples collected from 602 men whose incident fractures had been continuously ascertained by x-ray reports from 1989 to 2010. We measured bone mineral density (BMD) by dual-energy x-ray absorptiometry. The association between TT and fracture risk was assessed by the Cox proportional hazards model, taking into account the effect of age and BMD.
RESULTS
Mean TTLC-MS/MS was higher than TTRIA by 27 ng/dL (95% CI 13–41). The concordance correlation coefficient between TTLC-MS/MS and TTRIA was 0.72 (95% CI 0.68–0.76). The Deming regression equation linking the 2 measurements was ln(TTLC-MS/MS + 10) = 0.87 + 0.87 × ln(TTRIA + 10). The hazard ratio of fracture per SD decrease in TT was 1.32 (95% CI 1.12–1.54) for TTLC-MS/MS and 1.23 (1.06–1.43) for TTRIA. The correlation between predicted probabilities of fracture by TTLC-MS/MS and TTRIA was r = 0.96, with the mean difference being 0.01% (95% CI −6.1% to 6.2%). Slightly more patients were classified as having hypogonadism if TTRIA was used (29% vs 26%).
CONCLUSIONS
The concordance between LC-MS/MS and RIA in the measurement of serum TT was moderate. Moreover, the magnitude of association between testosterone and fracture risk in older men was larg...
Tran, TT, Bray, K, Ford, MJ, Toth, M & Aharonovich, I 2015, 'Quantum Emission From Hexagonal Boron Nitride Monolayers', Nature nanotechnology, vol. 11, no. 1, pp. 37-41.
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Atomically thin van der Waals crystals have recently enabled new scientific
and technological breakthroughs across a variety of disciplines in materials
science, nanophotonics and physics. However, non-classical photon emission from
these materials has not been achieved to date. Here we report room temperature
quantum emission from hexagonal boron nitride nanoflakes. The single photon
emitter exhibits a combination of superb quantum optical properties at room
temperature that include the highest brightness reported in the visible part of
the spectrum, narrow line width, absolute photo-stability, a short excited
state lifetime and a high quantum efficiency. Density functional theory
modeling suggests that the emitter is the antisite nitrogen vacancy defect that
is present in single and multi-layer hexagonal boron nitride. Our results
constitute the unprecedented potential of van der Waals crystals for
nanophotonics, optoelectronics and quantum information processing.
Tran, TT, Fang, J, Zhang, H, Rath, P, Bray, K, Sandstrom, R, Shimoni, O, Toth, M & Aharonovich, I 2015, 'Facile Self-Assembly of Quantum Plasmonic Circuit Components', Adv. Mater., vol. 27, no. 27, pp. 4048-4053.
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Efficient coupling between solid state quantum emitters and plasmonic
waveguides is important for the realization of integrated circuits for quantum
information, communication and sensing. However, realization of plasmonic
circuits is still scarce, particularly due to challenges associated with
accurate positioning of quantum emitters near plasmonic resonators. Current
pathways for the construction of plasmonic circuits involve cumbersome and
costly methods such as scanning atomic force microscopy or mechanical
manipulation, where individual elements are physically relocated using the
scanning tip. Here, we introduce a simple, fast and cost effective chemical
self-assembly method for the attachment of two primary components of a
practical plasmonic circuit: a single photon emitter and a waveguide. Our
method enables coupling of nanodiamonds with a single quantum emitter (the
nitrogen-vacancy (NV) center) onto the terminal of a silver nanowire, by simply
varying the concentration of ascorbic acid (AA) in a reaction solution. The AA
concentration is used to control the extent of agglomeration, and can be
optimised so as to cause preferential, selective activation of the tips of the
nanowires. The nanowire-nanodiamond structures show efficient plasmonic
coupling of fluorescence emission from single NV centers into surface plasmon
polariton (SPP) modes, evidenced by a more than two-fold reduction in
fluorescence lifetime and an increase in fluorescence intensity.
Tran, VS, Ngo, HH, Guo, W, Zhang, J, Liang, S, Ton-That, C & Zhang, X 2015, 'Typical low cost biosorbents for adsorptive removal of specific organic pollutants from water', BIORESOURCE TECHNOLOGY, vol. 182, pp. 353-363.
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Truong, BCQ, Tuan, HD, Fitzgerald, AJ, Wallace, VP & Nguyen, HT 2015, 'A Dielectric Model of Human Breast Tissue in Terahertz Regime', IEEE Transactions on Biomedical Engineering, vol. 62, no. 2, pp. 699-707.
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The double Debye model has been used to understand the dielectric response of different types of biological tissues at terahertz (THz) frequencies but fails in accurately simulating human breast tissue. This leads to limited knowledge about the structure, dynamics, and macroscopic behavior of breast tissue, and hence, constrains the potential of THz imaging in breast cancer detection. The first goal of this paper is to propose a new dielectric model capable of mimicking the spectra of human breast tissue's complex permittivity in THz regime. Namely, a non-Debye relaxation model is combined with a single Debye model to produce a mixture model of human breast tissue. A sampling gradient algorithm of nonsmooth optimization is applied to locate the optimal fitting solution. Samples of healthy breast tissue and breast tumor are used in the simulation to evaluate the effectiveness of the proposed model. Our simulation demonstrates exceptional fitting quality in all cases. The second goal is to confirm the potential of using the parameters of the proposed dielectric model to distinguish breast tumor from healthy breast tissue, especially fibrous tissue. Statistical measures are employed to analyze the discrimination capability of the model parameters while support vector machines are applied to assess the possibility of using the combinations of these parameters for higher classification accuracy. The obtained analysis confirms the classification potential of these features.
Truong, BCQ, Tuan, HD, Wallace, VP, Fitzgerald, AJ & Nguyen, HT 2015, 'The Potential of the Double Debye Parameters to Discriminate Between Basal Cell Carcinoma and Normal Skin', IEEE Transactions on Terahertz Science and Technology, vol. 5, no. 6, pp. 990-998.
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The potential of terahertz imaging for improving the efficiency of Mohs's micrographic surgery in terms of tumor margin detection was previously studied. Thanks to high water content of human skin, its dielectric response to terahertz radiation can be described by the double Debye model which uses five parameters to fit experimental data. Skin tumors typically have a higher water content than normal tissues do, and this should be apparent in the parameters. The goal of this paper is to apply statistical methods to these parameters to test their power to differentiate skin cancer from normal tissue. Based on the prediction accuracy estimated using a cross-validation method, we found the best classifier was the static permittivity at low frequency [Formula: see text] . By combining the most relevant parameters, we obtained a classification accuracy of 95.7%, confirming the classification capability of the parameters, thereby supporting their application to improve terahertz imaging for the purpose of skin cancer delineation.
Tu, C & Lee, JE-Y 2015, 'A semi-analytical modeling approach for laterally-vibrating thin-film piezoelectric-on-silicon micromechanical resonators', Journal of Micromechanics and Microengineering, vol. 25, no. 11, pp. 115020-115020.
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Tu, KL, Chivas, AR & Nghiem, LD 2015, 'Chemical cleaning effects on properties and separation efficiency of an RO membrane', Membrane Water Treatment, vol. 6, no. 2, pp. 141-160.
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Tuan, HD, Savkin, A, Nguyen, TN & Nguyen, HT 2015, 'Decentralised model predictive control with stability constraints and its application in process control', Journal of Process Control, vol. 26, pp. 73-89.
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This paper presents a novel decentralised model predictive control for a plant consisting of interconnected systems. A constructive technique for online stabilisation that is applicable to the model predictive controllers (MPC) is developed. The plant-wise stability is achievable by the newly introduced asymptotically positive realness constraint (APRC) for MPC. Simulations are provided to demonstrate the efficiency of the presented APRC.
Turner, BD, Henley, BJ, Sleap, SB & Sloan, SW 2015, 'Kinetic model selection and the Hill model in geochemistry', International Journal of Environmental Science and Technology, vol. 12, no. 8, pp. 2545-2558.
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Tursky, ML, Beck, D, Thoms, JAI, Huang, Y, Kumari, A, Unnikrishnan, A, Knezevic, K, Evans, K, Richards, LA, Lee, E, Morris, J, Goldberg, L, Izraeli, S, Wong, JWH, Olivier, J, Lock, RB, MacKenzie, KL & Pimanda, JE 2015, 'Overexpression of ERG in cord blood progenitors promotes expansion and recapitulates molecular signatures of high ERG leukemias', Leukemia, vol. 29, no. 4, pp. 819-827.
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ur Rehman, Z, Hussain, OK, Hussain, FK, Chang, E & Dillon, T 2015, 'User-side QoS forecasting and management of cloud services', World Wide Web, vol. 18, no. 6, pp. 1677-1716.
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Urtasun, A & Lu, DD-C 2015, 'Control of a Single-Switch Two-Input Buck Converter for MPPT of Two PV Strings', IEEE Transactions on Industrial Electronics, vol. 62, no. 11, pp. 7051-7060.
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Vakhshouri, B & Nejadi, S 2015, 'Predicition Of Compressive Strength In Light-Weight Self-Compacting Concrete By ANFIS Analytical Model', Archives of Civil Engineering, vol. 61, no. 2, pp. 53-72.
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AbstractLight-weight Self-Compacting Concrete (LWSCC) might be the answer to the increasing construction requirements of slenderer and more heavily reinforced structural elements. However there are limited studies to prove its ability in real construction projects. In conjunction with the traditional methods, artificial intelligent based modeling methods have been applied to simulate the non-linear and complex behavior of concrete in the recent years. Twenty one laboratory experimental investigations on the mechanical properties of LWSCC; published in recent 12 years have been analyzed in this study. The collected information is used to investigate the relationship between compressive strength, elasticity modulus and splitting tensile strength in LWSCC. Analytically proposed model in ANFIS is verified by multi factor linear regression analysis. Comparing the estimated results, ANFIS analysis gives more compatible results and is preferred to estimate the properties of LWSCC.
Valiente, D, Ghaffari Jadidi, M, Valls Miró, J, Gil, A & Reinoso, O 2015, 'Information-based view initialization in visual SLAM with a single omnidirectional camera', Robotics and Autonomous Systems, vol. 72, pp. 93-104.
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van Duren, I, Voinov, A, Arodudu, O & Firrisa, MT 2015, 'Where to produce rapeseed biodiesel and why? Mapping European rapeseed energy efficiency', Renewable Energy, vol. 74, pp. 49-59.
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van Halteren, A & Gay, V 2015, 'Continuous Digital Health', IEEE Internet Computing, vol. 19, no. 4, pp. 8-9.
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Vazquez, S, Marquez, A, Aguilera, R, Quevedo, D, Leon, JI & Franquelo, LG 2015, 'Predictive Optimal Switching Sequence Direct Power Control for Grid-Connected Power Converters', IEEE Transactions on Industrial Electronics, vol. 62, no. 4, pp. 2010-2020.
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Grid-connected power converters play a key role in several applications such as the integration of renewable energy sources and motor drives. For this reason, the development of high performance control strategies for this particular class of power converters has increasingly attracted the interest of both academic and industry researchers. This paper presents the predictive optimal switching sequence (OSS) direct power control (DPC) (OSS-DPC) algorithm for grid-connected converters. The OSS-DPC method belongs to the predictive-DPC family and provides the desired power references by calculating globally OSSs. To address computational and implementation issues, an efficient control algorithm, named reduced OSS-DPC, is introduced. The implementation of the proposed control strategy in a standard DSP is evaluated on a two-level power converter prototype working as a STATCOM. Experimental results show the algorithm's potential to provide high performance during both transient and steady states.
Veitch, D & Tune, P 2015, 'Optimal Skampling for the Flow Size Distribution', IEEE Transactions on Information Theory, vol. 61, no. 6, pp. 3075-3099.
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We introduce a new method of data collection for flow size estimation, the optimized flow sampling sketch, which combines the optimal properties of flow sampling with the computational advantages of a counter array sketch. Using Fisher information as a definitive basis of comparison, we show that the statistical efficiency of the method is within a constant factor of that of flow sampling, which is known to be optimal but which cannot be implemented without a flow table, which has higher memory and computational costs. In the process, we derive new results on the Fisher information theoretic and variance properties of the counter array sketch, proving that an overloaded sketch actually destroys information. We revisit the `eviction sketch' of Ribeiro et al. using the Fisher information framework. We show that its performance is much higher than previously supposed, and we define a new method, the optimized eviction sketch, which has very high efficiency. We compare these methods against each other and a third skampling method, sketch guided sampling, theoretically, on models and on data.
Versendaal, J & Merigó, JM 2015, 'Service business track at INBAM, Barcelona, 2014 “Service Design and Technology”', Service Business, vol. 9, no. 2, pp. 183-184.
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Verstraete, D, Gong, A, Lu, DD-C & Palmer, JL 2015, 'Experimental investigation of the role of the battery in the AeroStack hybrid, fuel-cell-based propulsion system for small unmanned aircraft systems', International Journal of Hydrogen Energy, vol. 40, no. 3, pp. 1598-1606.
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Vieira, GC, Chockalingam, S, Melegh, Z, Greenhough, A, Malik, S, Szemes, M, Park, JH, Kaidi, A, Zhou, L, Catchpoole, D, Morgan, R, Bates, DO, Gabb, PD & Malik, K 2015, 'LGR5 regulates pro-survival MEK/ERK and proliferative Wnt/β-catenin signalling in neuroblastoma', Oncotarget, vol. 6, no. 37, pp. 40053-40067.
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LGR5 is a marker of normal and cancer stem cells in various tissues where it functions as a receptor for R-spondins and increases canonical Wnt signalling amplitude. Here we report that LGR5 is also highly expressed in a subset of high grade neuroblastomas. Neuroblastoma is a clinically heterogenous paediatric cancer comprising a high proportion of poor prognosis cases (~40%) which are frequently lethal. Unlike many cancers, Wnt pathway mutations are not apparent in neuroblastoma, although previous microarray analyses have implicated deregulated Wnt signalling in high-risk neuroblastoma. We demonstrate that LGR5 facilitates high Wnt signalling in neuroblastoma cell lines treated with Wnt3a and R-spondins, with SK-N-BE(2)-C, SK-N-NAS and SH-SY5Y cell-lines all displaying strong Wnt induction. These lines represent MYCN-amplified, NRAS and ALK mutant neuroblastoma subtypes respectively. Wnt3a/R-Spondin treatment also promoted nuclear translocation of β-catenin, increased proliferation and activation of Wnt target genes. Strikingly, short-interfering RNA mediated knockdown of LGR5 induces dramatic Wntindependent apoptosis in all three cell-lines, accompanied by greatly diminished phosphorylation of mitogen/extracellular signal-regulated kinases (MEK1/2) and extracellular signal-regulated kinases (ERK1/2), and an increase of BimEL, an apoptosis facilitator downstream of ERK. Akt signalling is also decreased by a Rictor dependent, PDK1-independent mechanism. LGR5 expression is cell cycle regulated and LGR5 depletion triggers G1 cell-cycle arrest, increased p27 and decreased phosphorylated retinoblastoma protein. Our study therefore characterises new cancer-associated pathways regulated by LGR5, and suggest that targeting of LGR5 may be of therapeutic benefit for neuroblastomas with diverse etiologies, as well as other cancers expressing high LGR5.
VIZUETE-LUCIANO, E, MERIGÓ, JM, GIL-LAFUENTE, AM & BORIA-REVERTER, S 2015, 'DECISION MAKING IN THE ASSIGNMENT PROCESS BY USING THE HUNGARIAN ALGORITHM WITH OWA OPERATORS', Technological and Economic Development of Economy, vol. 21, no. 5, pp. 684-704.
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Assignment processes permit to coordinate two set of variables so each variable of the first set is connected to another variable of the second set. This paper develops a new assignment algorithm by using a wide range of aggregation operators in the Hungarian algorithm. A new process based on the use of the ordered weighted averaging distance (OWAD) operator and the induced OWAD (IOWAD) operator in the Hungarian algorithm is introduced. We refer to it as the Hungarian algorithm with the OWAD operator (HAOWAD) and the Hungarian algorithm with the IOWAD operator (HAIOWAD). The main advantage of this approach is that we can provide a parameterized family of aggregation operators between the minimum and the maximum. Thus, the information can be represented in a more complete way. Furthermore, we also present a general framework by using generalized and quasi-arithmetic means. Therefore, we can consider a wide range of particular cases including the Euclidean and the Minkowski distance. The paper ends with a practical application of the new approach in a financial decision making problem regarding the assignment of investments.
Vo, PT, Ngo, HH, Guo, W, Zhou, JL, Listowski, A, Du, B, Wei, Q & Bui, XT 2015, 'Stormwater quality management in rail transportation - Past, present and future', SCIENCE OF THE TOTAL ENVIRONMENT, vol. 512, pp. 353-363.
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Railways currently play an important role in sustainable transportation systems, owing to their substantial carrying capacity, environmental friendliness and land-saving advantages. Although total pollutant emissions from railway systems are far less than that of automobile vehicles, the pollution from railway operations should not be underestimated. To date, both scientific and practical papers dealing with stormwater management for rail tracks have solely focused on its drainage function. Unlike roadway transport, the potential of stormwater pollution from railway operations is currently mishandled. There have been very few studies into the impact of its operations on water quality. Hence, upon the realisation on the significance of nonpoint source pollution, stormwater management priorities should have been re-evaluated. This paper provides an examination of past and current practices of stormwater management in the railway industry, potential sources of stormwater pollution, obstacles faced in stormwater management and concludes with strategies for future manage